Solar Water Heater Experiment
The water glass with white paper had a temperature of 79 degrees Fahrenheit.
The water glass with the white paper had an ending temperature of 82 degrees Fahrenheit
The water glass with the black paper had a temperature of 79 degrees Fahrenheit.
The water glass with the black paper had an ending temperature of 84
We made a solar water heater. After we filled up a cup of water, we wrapped it up in black paper so that it will be able to attract heat. We put a thermometer in the the cup to see the temperature of the water. We put foil on top of the cup so that there is more heat in the cup. We put construction paper around the cup of water. Inside and outside of the construction paper, so that the cup can attract more heat inside the cup. We put foil on the top of the paper so that the heat it attracts will go to the cup to increase the water temperature. We cut a hole in the top so that sunlight could also reach the cup.
The starting temperature of the water was 74 degrees Fahrenheit.
Our solar water heater fell over and all the water fell out
Instead of covering the cup with the paper, I could have put it around on all sides instead of covering it so that the light which is missing the cup could reflect on the foil and go into the cup which could absorb more heat.
We built a second solar water heater.
Our starting temperature was 78 degrees Fahrenheit.
Our ending temperature was 82 degrees Fahrenheit.
Absorption is the holding of the sun's heat energy.
Black absorbs the most heat energy.
Reflection is the bouncing off of the sun's heat energy.
Smooth metal reflects much of the sun's heat energy.
Energy cannot be created or destroyed.
Energy can be transferred (moved) between objects.
Our goal was to transfer the sun's energy (heat) to our water.
Most of the energy on Earth comes from the sun
Tower Engineering
Goal:Build the tallest tower.
Rules:You may not modify (cut, fold, etc.) any materials
You will have 30 minutes to build your tower.
Hands free measuring
My tower was 54.5 inches tall.
One design we made that worked well was stacking all the cups on top of each other.
This helped us increase the height.
One design choice which didn't work well was putting too much weight on top.
This failed because when we added weight to the top, it began to tilt, and the base kept on falling and breaking since the base wasn't strong enough.
One design element that another group used that we can incorporate in our design is making a wide base and making the top thinner as we go taller.
Second Attempt
Our tower fell down
Light Waves
What is light?
Light is a form of energy that can be seen by the human eye
Light comes from the sun
Light can be converted to others forms of energy
Light gives us warmth
What is light made of?
Light is made of photons.
A photon behaves both like a particle(matter) and a wave.
Why does light go through some things and not others?
Transparent
Light goes through some materials like glass and water.
Opaque
Visible Light waves are the part of the electromagnetic spectrum our
eyes can see
Some electromagnetic waves we cannot see are radio waves, gamma rays, ultraviolet rays, and microwaves.
Light travels in waves in a straight line.
The electromagnetic spectrum is made up of visible and invisible light waves.
The color spectrum contains the seven colors revealed when light passes through a prism.
The color of an object is determined by which light waves it absorbs and which it reflects.
Nothing moves faster than light becuase
light travels at 186,282 miles per second. Light
moves at the fastest known speed in the
universe. The sun is about 93 million miles from
Earth, but it only takes about 8 minutes for
the light to reach Earth.
Assessment
1.Lasers are a special form of light, and they're it's different from regular light because it contains only one color of wavelength, not many different wavelengths, all the wavelengths are together, in phase, or in unison, and laser wave lights all travel in the same direction
2.Lasers are used for many things such as:
CD and DVD players
Bar code readers in stores
Doctors use lasers to do delicate surgery, such as eye surgery.
Lasers carry TV and telephone signals over special cables.
Metal workers use lasers to cut and weld metal into everything from street light poles to cars.
Workers in clothing factories use lasers to cut through hundreds of layers of fabric at once.
3. Laser surgeries often cause less bleeding, they reduce the risk of infection, and they reduce bleeding, swelling, scarring, pain, and the length of the recovery period.
Source:
"Bill Nye the Science Guy: Light and Color"
Season 1, Episode 16
White light is a mixture of all the colors of a rainbow
A prism seperates white light into all the colors of the rainbow.
The color of an object is determined by the chemicals
it is made of.
The object absorbs all colors except the color it looks like.
It reflects the color back to our eyes.
Black absorbs all the colors in white light.
White reflects all the colors in white light
The wavelength is the distance between two crests
of the wave.
The frequency is how fast the wave vibrates or goes up and down.
When you see an object, such as an apple, you see red. The apple
is reflecting red, but absorbing all of the other colors that hit. The
color red, reflects back to your eye so we can see it. Black and white are
different though. Black absorbs all colors while white reflects all colors.
Wavelength and frequency have an inverse relantionship.
The longer the wavelength, the smaller the frequency.
The shorter the wavelength, the greater the frequency.
9.Red has the longest wavelength
10.Violet has the shortest wavelength
11.Violet has the highest frequency, and
red has the lowest frequency
12.This tells me that the
frequency of a color depends on its wavelength
15.The electromagnetic spectrum
is a range. The range is all the possible
frequencies of elctromagnetic radition. There
are many different types of waves in this
spectrum. Some waves are gamma rays,
microwaves, radio waves, X-ray waves, and others.
A part of the spectrum is colors. There are colors
we see. These color are the colors of the
rainbow, red, orange, yellow, green, blue, indigo,
and violet or purple also known as ROY G. BIV. The
elctromagnetic spectrum is not just waves and colors,
it's and important thing which is needed to survive.
17. This red apple is red because wait, actually it's not!
It seems red to us but it is not. This apple
is absorbing all the colors that hit it except for red.
The frequency of light that we see as red is being reflected
back to our eyes and we see it as red.
What is Energy?
Energy is the ability to change or do work.
Energy is also light and heat.
We use energy so we can see. Most of our light comes
from the sun. We usually use elctricity to make light.
We also use energy to make heat. We use food as energy
to heat up our bodies. The energy stored in plants & other
things are used to make heat. About 3/4 of our heat comes
from the sun.
Energy Makes things Move
Things move when they have energy. Energy stored in gasoline's used for veichles such as cars. Sail boats are pushed with the energy in the wind. When you feel too tired to move, you've run out of energy. You need to eat.
This car cannot move without any energy.
Energy Runs Machines
Energy runs machines in the form of electricity. We use many things which require electricity. TV's, computers, laptops, microwaves, toys, and gadgets use energy in the form of electricity. Without energy, we wouldn't have the Internet! Think about that!
Without energy, these wouldn't work
You can't create or destroy energy, you change its form. Right now, there's the same quantity of energy as there was in the beginning of time & the beginning of Earth. We change the form of energy everyday. Energy is mostly converted into heat.
The Sun
It's always the sun!
The sun was the origin of energy.
It provided light and heat.
Hey! Don't be mad at
me! Oh, BTdubs(W),you're
welcome!
Fire
A long time ago, humans where scared
of fire when lightning struck, but one day,
they noticed how useful it is.
Early cave dewellers didn't know how to start a fire.
They just waited for lightning to strike.
They somehow learned how to feed a fire and keep it going.
Later, they learned to rub pieces of flint to kindle a fire.
For the first time,
people had warmth
they could control.
They felt at home.
One day somebody dropped some meat in fire.
The dewellers found that cooked meat is delicious.
They finally had an energy source which could do things for them. Life is so much easier because of this.
Early Civilizations use energy.
Around 2,500 years ago, commmunities started to use windmills to grind grain. They also used water wheels for this task. These machhines were also used for pumping water and sawmills.
Early Egyptians collected from rivers & used it for light. Native Americans used burned coal for clay pots. Ancient Chinese heated sea water for salt using natural gas.
Around that time, people began using geothermal energy.(Energy inside the Earth) They piped hot water from springs into their homes.
Renewable Resources
Renewable Resources such as the sun or the wind are renewble. They will never run out. The can be made quickly or renewed over & over again.
Nonrenewable resources.
Some energy sources are nonrenewable or not renewable. They take hundreds or sometimes thousands of years to form. We can't make more really quick. We can run out of nonrenewable sources.
We mostly use non-renewable sources today, so we need to conserve energy whenever we get the chance.
Tips to save energy
Keep all of you windows and doors close when you have the heater or AC on
2.Open your blind on cold days with sun to let in the sun's energy
Close them on cold nights so that the sun's energy does not escape
3.Also, close them on hot days to keep the sun's energy out
4.Dress warmly in cold weather so that you don't need to use a heater for heat.
5. Dress in light clothes to stay cool when it's hot outside.
Save energy for lighting
1. When you leave a room, turn off the lights.
2. Use solar energy as much as possible.
3. Use outdoor light only when it's absolutely necessary
4. Use only the type of light you need for your task. For instance, if you need to read, use a reading lamp, not an overhead light.
5. Use energy-saving compact fluorescent light bulbs otherwise know as CFLs or LED lights but not incandescent light bulbs at home. CFL & LED lights save money & energy.
How to save energy while using warm water
1.Instead of baths, take quick, short showers
2. Brush your teeth and wash your hands with cold water.
3. Don't leave hot water running!
4. Fill the sink with warm water to wash dishes and cold water to rinse. Don't wash dishes under running water.
5. Rinse dishes in cool water before putting in dishwasher. Put diswasher on shortest cycle.
6. Always rinse clothes in cold water after washing in warm or cold water.
7. Ask an adult to wrap your water heater with an insulating blanket.
8. Tell your parents to set your water heater at the lowest temperature necessary.
Tips to save energu while using machines
1. Turn off machines when not in use
2. Refrigerators and freezers use a lot of energy. Decide what food you want before you open the door. Don't leave the door open.
3. Run the dishwasher only when full. Use energy-saver mode. Allow dishes to air dry.
1.Natural Gas
3.Coal
5.Propane
6.Geothermal Energy
Pay attention to th yellow EnergyGuide label when you buy an appliance.
The label tells you how much the appliance costs to operate. Since better aplliances cost more than less-efficient appliances, you need to know how much it costs to operate the appliance every year and how many years for use to expect. A payback period is a time when you use a type of system/appliance before you start to benefit from energy savings. For instance, if you buy an amazing refridgerator whichcosts $100 more but uses at least 20 dollars less electricity every year, your payback period would start in 5 years. You would save $100 over the time of the appliance & save natural resources since refridgerators usaually last five yesars.
Energy Consumption in the Industrial Sector
The United States is a greatly industrialized nation. We use a lot of energy. As of now, the industrial sector uses about 1/3 of the country's energy.
Petroleum Refining
You can't use petroleum as it comes out of the ground. You need to refine it before you use it. Oil refineries use a lot of energy to change crude oil into gasoline, deisel, avation fuel, heating oil, chemicals, & others.,
Steel Manufacturing
The steel industry uses energy to turn iron ore & scrap metal into steel. Steel is a rock-hard, durable metal which needs to be heated to hight temperatures to manufacture it. Those high temperatures take a lot of energy to produce.
Aluminum Manufacturing
A light-weight, versatile metal is none other than aluminum. It takes large quantities of elecricity to make aluminum from bauxite or aluminum ore.
Paper Maunfacturing
Energy is being used in every step of making paper. The paper industry uses 30% less fossil fuel in the present than the past.
Chemical Manufacturing
In our present-day lives, chemicals are very important. The United States has the largest chemical industry in the world. It uses coal, natural gas, & oil to power the machinery & petroleum and propane along with nattural gas as sources from which the chemicals are made. Chemical manufacturing uses almost 1/4 of the energy used by the industrial sector.
Cement Manufacturing
The U.S. uses lots of concrete. A lot of energy is used in making cement. This process requires very high temperatures which causes a lot of energy to be used. Now, this industry is using energy that would've been wasted in a landfill.
The Transportation Sector
Something that uses about 28% of the country's energy supply to move people and products/goods from one place to another is the......transportation center!
Most Americans drove big cars which used a lot of gas 40 years ago but then, the government passsed a law which required cars/automobiles to get a more efficent gas mileage. Passenger cars and light trucks use one-third of the fuel we use for transportation.
Cars became more fuel efficent from 1973 to now.
Commercial vehicles such as trains, trucks, buses, and planes consume 2/3 of our country's transportation fuel. They carry people and products all around the country.
The United States uses a lot of energy. We consume 18.5% of the world's energy with less the five percent of the world's population. An average American uses 4.1 times more energy than the world average.
To make our lives confortable and enjoyable, we rely on energy. To mantain this, we need to use our energy sources wisely.
Whatever choices we make which involve energy make an impact on our environment and lives. There are many was to use less energy and use it more wisely. This involves energy conservation & energy efficiency.
Energy conservation is anything that results in less energy use. Energy efficiency is when less energy is used to perform a function on technology.
Our energy choices & actions can reduce the amount of energy used in each sector of economy.
The second largest energy expense in your home is water heating, and it accounts for about 18% of your utility bill.
% of water heating in utility bill
Americans have 17 percent of the world's automobiles. Average Americans uses 670 gallons and drive about 12,000 miles each year. Now, all new cars must show a mileage performance label or Fuel Economy Label, which lists the estimated miles per gallon for city and highway driving.
Uranium
Is uranium renewable or nonrenewable?
When we slpit 1 atom into 2 atoms, it's called fission. The extra energy holding the atom together is released as heat and radiation.
Some advantages of uranium are:
The nucleus has lots of nuclear energy that holds it together, it is a cheap energy source which we have a lot of in the U.S, and since uranium isn't burned and it creates no pollution, we can use nuclear energy to make electricity.
Some disadvantages of uranium are:
1.Uranium is nonrenewable.
2. Rays of very dangerous energy called radiation is released when we split uranium.
Some facts about uranium are:
1.Everything is made up of atoms, which are tiny particles-the nucleus, made up of smaller particles, is in the center of each atom.
2. When we split uranium atoms, some nuclear energy is released in the form of heat.
3."The waste from nuclear plants produces radiation for a long time."
4. Uranium is mostly transported by truck.
5."Almost one-tenth (8.5) of the energy we use in the U.S. comes from uranium. It is used to make electricity."
What is hydrogen?
Hydrogen is a type of gas which hard to move and store.
What veichles use hydrogen?
Research veichles use hydrogen(and oxygen).
What are the environmental impacts of hydrogen?
Hydrogen "fuel cell vehicles" may be common in the future.
What are the economic impacts of hydrogen?
More people are lookig at vehicles powered by hydrogen because of high gasoline prices and environmental concern.
What is the challenge to widespread use?
The challenge to widespread use is storage.
Some advantages of hydrogen are:
1."Hydrogen is the most abundant element in the universe."
2. Hydrogen can be made from natural gas, biomass, or coal
3. Fuel cells use oxygen and hydrogen to make electricity without dangerous emissions
4. "The Department of Energy has a hydrogen fuel cell initiative to support research and development of new technologies."
Some disadvantages of hydrogen are:
1.Hydrogen is a type of gas at normal pressure and temperature
2. Now, it takes more electricity to electrolyze water than is produced by fuel from hydrogen.
3.Right now, most hydrogen comes from the steam reforming of natural gas.
4."Hydrogen gas takes up six times as much space as gasoline per energy equivalent."
5. Hydrogen production is very expensive today.
6."Fuel cells are an expensive method of producing electricity today."
7.No hydrogen fuel veichles are in the market today and less than 60 fueling stations are for test vehicles.
Some facts are:
1."Pure hydrogen does not exist on Earth; it is only found in molecules with other elements."
2."Hydrogen can be produced from water by electrolysis, a process in which water molecules are seperated into hydrogen and oxygen using electricity."
3. Hydrogen production or infrastructures don't exist yet.
4. "Hydrogen is the fuel that was used in the space shuttles."
5. "There is ongoing research into hydrogen fuel cell technology."
Predator vs. Prey
science narrative
A Scientific story by:Richa
I walked around in the boreal forest I live in. I tried to catch some of the falling snow on my tongue. It's winter.
I decided to go to my favorite place, the place where the snow starts to stop. Near the border, I heard some kind of creatures driving a weird thing down what they call a road.
I heard them say, "We're finally in Alaska! I think we should..........."
I did not hear the rest of it since I ran back to my home trying to figure out what that meant.
I didn't know so I went around the snowy forest. I came upon a pretty wild flower. I wanted to eat it but it was poisonous. Wild flowers are very scarce were I live.
I went to the lake for a drink of water and wondered what to do.
The lake is mostly frozen since it is winter.
As I saw the mountains, I wished, that I could be as tall as the mountains so I could see all the snowshoe hares.
I'm a young adult Canada Lynx. As I sit down in my home, I think about those creatures. They remind me of my family. I have no family anymore. They were killed by the same type of creatures(humans). My mother to told me to flee and save myself. She was killed while trying to save me.
I went to the place my family used to gather and have fun. "Good ol' times," I think. Little did I know that I was standing in the place where all the snowshoe hares gather.
The snowshoe hare was eating rose buds. She moved on to eating nearby twigs. She moved on to eating stems and kept eating, but she could always eat more.
A snowshoe hare is just a North American hare with a white winter coat; large, hairy hind feet; along with fairly small ears.
I smelt a smell, a smell so good that it was to die for. I knew what that smell was, my favorite, my prey. Although, the smell was sort of weak since my nose isn't that strong. It was the delicious, amazing, so yummy you could die for: a snowshoe hare.
Plants and animals have internal(inside) and external (outside) structures to support survival.
Internal and External plant structures that support survival.
Stem: Internal Structures
Xylem
Xylem transports water minerals up from the roots, through the stem, and into the leaves.
Phloem
Phloem transports sugar produced in the leaves to the rest of the plant.
Sense of Smell
There are 2 holes called nostrils at the end of the nose.
The septum is the space in between your nostrils.
The nasal cavity is the space in your head behind your nose.
The nose can smell things because of the olfactory epithelium.
The olfactory epithelium also contains special sense receptors.
The Brain
interprates the message as smell
The brain's way of giving you information about the environment is by identifying smells. It helps animals stay safe.
Animals need to make decisions.
Is it good to eat?
Should I run or should I hide?
Some of these decisions are choices while some are instincts.
Instinct
an inborn pattern of behavior
Two examples of animal instincts are:
1. Baby Kangaroos hop into their mother's pouch
2.Bear hibernate in the winter
The snowshoe hare was moving closer to me. I could smell it. The smell was becoming stronger and Rumble!Rumble! My stomach was hungry.
The snowshoe hare was moving toward her predator. She didn't know it. She was just hopping along looking her family.
I heard the hare hopping somewhere. I started walking toward it.
Lucky for me , I have strong ears.
They were right next to each other, but they didn't know it. The predator was looking right, the prey was looking left.
There are 3 parts to the ear-the outer ear, the middle ear, and the inner ear.
The outer ear collects sound waves caused by vibration and moves it into the ear. It's a sound collector!
The vibrating eardrum moves the three earbones called ossicles.
The 3 ossicles are called:
the hammer, the anvil, and the stirrup.
The Inner ear
The cochlea is in your inner ear.
The cochlea is filled with fluid and tiny hairs that move when the sound vibrations move into the cochlea.
The auditory nerve bring signals from the cochlea to the brain which interprets them as sound.
Animals make decisions for survival based on the sounds it hears. Predators use sound to find prey. Prey use sounds to avoid predators.
Then I saw it. It was 50 yards away. The most delicious thing in the world. My stomach wanted it. It was a snowshoe hare.
I was hungry! I hid behind the closest tree. I was outnumbered. There were many hares. They could team up on me.
All those delicious hares went to a different place. I missed my chance!
q
The cornea is a dome of clear tissue in the front of the eye. It's like the window to the eye.
The colored part of the eye is called the iris.
The iris is located behind the cornea.
The pupil is the black area in the center of the eye. It opens and closes to let the correct amount of light enter the eye.
After light passes through the cornea, it passes through the lens.
The lens focus the light so the animal can see near and far objects.
The retina is the back wall of the eyeball
The light that has passed through the lens is focused on the retina..
The retina has millions of light sensitive cells.
Rods in the retina can see black and white.The brain interprets the signals(electrical impulses) as objects.
The smell was so strong. I turned around and saw the snowshoe hare. I attacked it's hind leg.
"Now it can't run," I thought. It started to flee! I chased it but after 2 dozen meters, I needed to stop.
An hour later, I saw it again. I hid behind the nearest tree.
Now I had the hare in a paw's reach. Lucky for me, the hare was fat!
I decided to try to hunt it again.
I took it to my home and started to eat. It was a good feast. When I became full, I hid it under a bush. I would eat it tomorrow and have another feast. Yay for me!
I lured it into one of my favorite places, the river. It had no choice but to jump into the river. I jumped right in and killed the hare. It was fun!
I ate the hare the next day and the next. Then, it was time for me to take take a nap and do the whole thing over again. Good Night!
The Digestive System
The snowshoe hare the predator ate must now be digested in order for the animal to get the energy and nutrients it needs for survival. This process is called digestion and occurs in the digestive tract. The process of digestion differs from animal to animal.
The process of digestion begins in the mouth. The teeth chew the food to break it into smaller pieces. The salivary glands secrete saliva which mixes with the food before it's swallowed.
The bolus (chewed food) goes down the esophagus into the stomach.
The stomach is a muscular bag that mixes the food into a soupy liquid.
Gastric juices(acid and enzymes)
mix with the food to break it down
into smaller pieces before it enter
the small intestine.
The food travels into the small intestine where enzymes from the gallbladder, pancreas, and liver to help break down the food into protein, carbohydrates, and fats that can be absorbed. Most absorption occurs here in the small intestine.
After the small intestine, food enters the large intestine where minerals and water are pulled out of it.
Anything that is not absorbed is waste and is expelled from the body.
Plate Tectonics and Large-Scale System Interactions
Prove the following ideas True or False:
1.The locations of earthquakes occur randomly without a pattern.
2.The locations of volcanoes occur randomly, without a pattern.
3.The locations of underwater mountain ranges, deep ocean trenches, and ocean floor structures occur randomly, without a pattern
For each question:
1st: Research the question.
2nd: Write A Paragraph
3rd: Add a map.
4th: Add pictures.
5th: Add one video.
Research your paragraph:
1. Take notes on the paper provided.
2. Organize your information.
3. Highlight all ideas that go together in one color.
4. Generate your pre-write.
5. Write your final copy.
1. True
Even though earthquakes can happen anywhere, earthquakes mostly happen along the places where tectonic plates (boundaries) meet and along the west coast.They are distributed unevenly across the Earth. Earthquakes mostly occur where stress is concentrated the most. Along the west coast, there are 2 main plates, the Pacific Plate and the Juan De Fuca Plate. A lot of pressure builds up since these 2 plates push hard against each other. This pressure causes some rocks in these plates to break. Many rocks break in these plates. When the rocks break, the sudden energy causes a seismic wave which causes an earthquake. Earthquakes mostly occur in the west and once in a while, the midwest and east.
2.False
There is a pattern as to where volcanoes occur. Most volcanoes follow a regular pattern. Most erupt where there's increasing seismic activity. This mostly happens on tectonic plate boundaries. There is more density and pressure near the plate boundaries. Density and pressure makes volcanoes erupt. Volcanoes erupt near plate boundaries because of the density and pressure there. The pattern is at the boundaries.
3. False
The locations of underwater mountain ranges, ocean trenches, and ocean floor structures have a pattern. Plate tectonic push each other up. This created underwater mountains. Ocean trenches are located in almost every ocean basin. They are also located in the "Ring of Fire". The ocean floor structures are mostly located in the Pacific Ocean. Some are also located in other parts of the Earth. There is a pattern for where these are located.
4. True
Volcanoes and earthquakes do occur in bands between continents and the ocean. Most volcanoes and formed at plate boundaries. The pressure from the plates pushing against each other causes the volcanoes to erupt in bands. Plate boundaries are usually at continent edges. Earthquakes also happen near plate boundaries. Most of the time, there's a main earthquake and smaller ones follow after. Plates push each and all of this intense pressure causes earthquakes to happen in bands. Sometimes they don't erupt or happen in bands, but most of the time, they do:)
5. True
Major mountain chains are located in or near continent edges. Most plate boundaries are found near continent edges. As the plates push against each other, they're slowly push up the crust and Voila! Mountains are formed. There are also many mountain chains located on land. As you know there are the Sierra Nevadas with Mount Whitney. Also, the Himalayan Mountains with Mount Everest. These are mostly formed from faults in the land. One side slowly rises and creates mountains. There are major mountain chains near and on continents.
White objects reflect all the white
light from the sun or a light bulb.
That is why white objects feel
cooler than darker objects.
Black absorbs all light and reflects none. The light energy is converted to heat energy. That is why black objects feel wamer than light objects
Light moves in waves
Orange Light
1. Light comes from the sun
White light
Alternate GATE Assessment can be found at:
https://www.tes.com/lessons/Ja03ratCqGETbg/edit
Smell
h
The canada lynx
- Doesn't really use nose to hunt
- Pretty strong sense of smell
Sound
- Great hearing
- Tufts on ears-hearing aids
Sight
- Amazing eyesight
- Can spot from 50 yards away
Red=High Risk of Earthquakes
The lines represent the ocean basins
That volcano is next to continent and the ocean
Its job is to focus light that enters the eyeball.
The optic nerve sends messages to the brain.
Longer Wavelength
Shorter Wavelength
14.
13.
18. One cat is black because it is absorbing all the
light that hits it, and the other is whie because it's
reflecting all the light that hits it.
16.
Energy
Assessment
Computer
Water Heating-18%
Electronics-6%
-Lighting
Refrigeration-4%
6%-
7%
7. Open windows & use fans in hot weather instead of air conditioning.
Appliances
6. Turn down the heater & use warm blankets at night.
5%-Other
-9%
Geothermal-<1%
Uses:Heating;Electricity
Cooling
Solar-<1%
Uses:Electricity
Wind-1%
Hydropower-3%
Uses:Electricity
Uses:Heating;
Electricity
Biomass-5%
Uses: Heating;
Electricity;
Transportation
Renewable Resources
Heating-45%
Home Energy Usage, 2010
Uranuim-9%
Coal-18%
Uses:Electricity
Uses:Electricity;Maunfacturing
Nonrenewable Sources
Natural Gas-27%
Propane-2%
Uses:Heating;Manufacturing;Electrcity
Uses:Heating;Maunfacturing
Petroleum-35%
Uses:Transportation;Manufacturing
Every living thing needs energy to grow. Plants use a proccess called photosynthesis in which they use snlight to make food. Animals,
like us can't change sunlight into food. Instead, we eat plants and store the energy from plants into our bodies.
8.
Tip #5
Tip #1
Compost food in your yard...It makes
great fertilizer!
Reduce the quantity of trash
you throw away.
Tip #4
How to save
energy from
products & trash.
Recycle things instead of trashing
them. It pretty much always saves
energy and resources.
Tip #2
Reuse things instead of throwing them away.
Tip #3
Fix broken things instead of throwing them away. It can save money too.
The Earth Needs your Help
You can tip the balance in favor
of a better planet by using less
energy & reducing global warming
The Earth Needs Your Help
Tip #1
Ask Yourself:
Use reusable
containers
and lunch boxes
Do I want this?
Will it make me happier?
Reuse Plastic bags or buy
reusable bags
Whenever possible, use a mircowave
or toaster instead of an oven.
They use less energy.
We HEAT Things with
2.
7. Petroleum& 8.Solar Energy
Tip #3
We can COOL with
Electricity
We can HEAT WATER with
Natural Gas
Electricity
Propane
Solar Energy
So hot air doesn't escape, leave
the oven door closed. Look
through the oven or use a timer
to check on cooking food.
We LIGHT with
Electricity
Solar Energy
We run APPLIANCES with
Electricity
We COOK with
Natural Gas
Electricity
Propane
Biomas
Solar Energy
We can MAKE ELECTRICITY with
Coal
Hydropower
Petroleum
Solar Energy
Uranium
Naural Gas
Biomass
Wind
Geothermal
How to Conserve
Energy while
cooking
Tip #2
For only 5 minutes,
preheat the oven.
What is radiation? How can it help and hurt us?
Radiation is rays of energy. It can heal broken bones and fight cancer, but large amounts of it can kill our cells and poison our bodies.
How do we use uranium?
We use the nuclear energy in an atom's nucleus to make energy. Fisiion is also used to make electricity.
What is uranuim? Where do we find it?
Uranium is a mineral found in rocks underground.
Uranium is nonrenewable
How does uranium in a power plant affect the environment?
Uranium in a power plant produces radiation for a long time. This radiation needs to be stored carefully or it may harm our communities and ecosystems. It may put us in great danger.
How is hydrogen produced and distributed?
Hydrogen is produced by splitting water molecules apart and breaking down coal, biomass, and natural gas. It is distributed as an alternative fuel veichle.
Radiation
Radiation is rays of energy that's released during fission. It can hurt us and help us.
Fission
When an atom is split into 2. The extra energy is released as heat and radiation.
Electricity
Uranium is also used to make electricity. "Nuclear power plants use fission to make electricity."
Atoms
All atoms have a nucleus. The nucleus has nuclear energy.
Nonrenewable or Renewable?
Uranium is nonrenewable. You can't make more.
A snowshoe hare's ears
Canada Lynx's Ears
Stem: External Structures
The stem is the main stalk of the plant. STems hold up the leaves to the light
Middle Ear
Sound waves vibrate the eardrum
Canada lynx
Vs.
snowshoe hare
Rumble!Rumble!
That was my stomach. I just woke up from my nap.
Message sent to brain
the olfactory nerve
sense receptors
good smell molecule
Me-Having Fun
bad smell molecule
My family
The canada lynx's nose
Very Important
We need light to survive.
Without light, the Earth would be a
cold, dead place
Translucent
Both reflects and allows some light to pass through where
it is scattered
Richa
Science
Burj
Khalifa
U.S. Energy Consumption by sector
Industrial-32.4%
Transportation
28.2%
Top Sources
Petroleum
Natural Gas
Biomass
Petroleum
Biomass
Natural Gas
Residential
21.1%
Commercial
18.3%
Top Sources
Natural Gas
Biomass
Petroleum
Top Sources
Biomass
Natural Gas
Petroleum
The changes we did not help because...