Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
2
Aaron
Science
What is Energy?
What is Energy?
Energy helps us do many different
things.
Energy has the power to things and has the ability to work.
Energy is Light
Energy is Heat
We use energy to make heat because the food we eat keeps our bodies warm. We use the energy stored in plants to make heat and we burn wood and natural gas to cook food and keep our houses warm.
All living things need energy to grow. Plants use light from the sun to grow. They can use the energy from the sun to make sugar and store it in their roots and leaves. Animals can't change light energy into sugar. Animals, including people, eat plants and use the energy to grow.
Energy Makes Things Grow
It takes energy to make things move. Cars and motorcycles run on energy stored in gasoline. After a long day, do you feel so tired that you can't move? You need something to eat to fuel you up.
Energy Makes Things Move
It takes energy to run machines. Electricity makes TVs, computers, and video games turn on. We make electricity by burning coal, oil, gas, and even trash.
Energy Runs Machines
There is the same amount of energy today as there was when the world began. When we use energy, we make that energy into different forms of energy. There will always be the same amount of energy in the world but most of it is turned into heat energy.
Energy Makes Things Grow
U.S Energy Use
Uranium is energy from splitting atoms.
Hydropower is energy from flowing water.
Petroleum is fuel for cars, trucks, and jets.
Coal is a black rock burned to make electricity.
Biomass is energy from wood, waste, and garbage.
Types Of Energy
Propane is portable fossil fuel gas often used in grills.
Geothermal is energy from heat inside the Earth.
Wind is energy from moving air.
Natural gas fossil gas moved by pipeline.
Solar is energy in rays from the sun.
Video
Types of Energy
Types of Energy
Solar
We get most of our energy from the sun. Only a small part of the sun's energy reaches Earth. Sunlight turns into heat when it hits things. Plants use the light from the sun to grow. Plants take energy in light and store it in their leaves and roots. The energy feeds every living thing on Earth. The energy from the sun makes rain fall and wind blow. We can trap that energy in dams and wind turbines. Coal, oil, and natural gas were made from prehistoric plants and animals. There is enough for everyone and we will never run out of it. Solar cells can turn solar energy into electricity. Solar panels are made of many solar cells.
Wind
We can use the energy in wind to do work and to make electricity. The energy in wind comes from the sun and some parts of the Earth can absorb more solar energy than others. When the Earth's surface absorbs the sun's energy, it turns the energy into heat. The air over the land usually gets warmer than the air over water. The warm air becomes less dense than the cooler air and rises. Cooler air comes and takes it's place. Big wind turbines capture the wind. When the wind blows, it pushes the air against the blades and then the blades spin making electricity. Wind is a clean energy source and wind turbines don't burn fuel so they dont pollute the air.
We can use the energy in wind to do work and to make electricity. The energy in wind comes from the sun and some parts of the Earth can absorb more solar energy than others. When the Earth's surface absorbs the sun's energy, it turns the energy into heat. The air over the land usually gets warmer than the air over water. The warm air becomes less dense than the cooler air and rises. Cooler air comes and takes it's place. Big wind turbines capture the wind. When the wind blows, it pushes the air against the blades and then the blades spin making electricity. Wind is a clean energy source and wind turbines don't burn fuel so they don't pollute the air.
Petroleum is a liquid that is found below ground and is called oil. Petroleum has a lot of energy and can turn into different types of fuels. Petroleum is called fossil fuel because it's made from the fossils of animals. The energy in petroleum came from the energy in the animals and that energy came from the sun. Petroleum is nonrenewable which means we can't make more.
Petroleum
Most cars, trucks, and planes use oil for power. Petroleum can harm the environment and can pollute the soil, water, and air. We use more petroleum than any other energy source.
Petroleum 2
To pump out oil we drill oil wells. After the oil is brought to the surface, it's sent to refineries. Most of the oil is turned gasoline and then moved to one place and then another through pipeline and by ships and trucks.
Natural Gas
You can burn natural gas to make heat. Natural gas is made from the fossils of animals and plants so it's also called fossil fuel. Natural gas is a nonrenewable energy source. We drill oil wells into the ground to get to the gas. Natural gas is moved by pipelines. We use natural gas every day. Most homes use natural gas for heat. Many stoves and water heaters use natural gas. Power plants burn natural gas to make electricity. Natural gas is the cleanest burning fossil fuel and it doesn't pollute the air as much as coal or oil.
Energy can move to place to place. The transfer of this type of energy changes how objects behave and it also creates new types of energy. The collision of atoms can make light, sound, and heat. Energy can be moved to another place by light. Energy is being transferred to our planet through waves of energy. The sun's energy travels to earth in light waves.
Transfer of Energy and Collision
Electricity must travel through a circuit to power things. Electricity has to move to work and electricity must flow through a device to give power. If there is a break somewhere in the circuit, the electricity stops working and is called an open circuit. When a circuit is closed, electricity flows and is able to go through the entire circuit.
Electricity
Light from the sun contains all colors. Light hits a yellow object and absorbs all colors except yellow.
Light
Light
Yellow is reflected back to our eye and that's the color we see.
Light is made up of waves. Light is energy. Light containes all the colors in the rainbow. When light hits an object, the object absorbs all the colors but reflects the color you can see.
Light is a form of electromagnet energy that can be seen by the human eye. Light comes from the sun. It can be converted into different types of energy like heat energy.
What is Light?
Plants change light energy into energy that it can use to grow in a process called photosynthesis. Animals eat the plants and get energy from the plants and the energy an animal eats came from the light energy by the sun. Light can be converted into different types of energy like heat and electricity. Light gives us warmth and allows us to see.
How do we use light?
1. Light originates from the sun
2. The energy inside a carrot originates from the sun, and the process that converts light into chemical energy is called photosynthesis.
3. Light energy travels to Earth in light waves
4. Light behaves like a particle and a photon.
5.Light behaves differently when it hits a certain object. An opague object is object something you can't see through. A transparent object is something you can see through. A translucent object is a mixture of both.
6. Light is the fastest thing in the universe.
7. You see lightning before you hear thunder because light is faster than sound.
8. I ate an apple this morning. Photo plays in the part of photosynthesis because it means light. I benefit the energy in the called light because edible plants change light energy in to food energy and we eat that energy when we eat plants.
Assessment
Part 2
9.
10. Red has the longest wave length.
11. Purple has the shortest wave length.
12. Purple has the highest frequency however, red has the lowest frequency.
13. Red has the longest wave length and the lowest frequency and purple has the highest frequency and the shortest wavelength.
14.
15.
16.
17. The picture I chose is orange because the pigment or the chemical inside it reflects orange and absorbs all other colors.
18. Black is black because it absorbs all colors and white reflects all colors.
Wolf
VS
Predator
vs
Prey
Deer
In the battle for survival!
Plants
Now I'm walking next to a river. I smell something but I can't figure out what it is.
Whoosh, Whoosh
The sound of wind keeps going through my ear.
I keep walking through the lonely forest.
The Story
A sapling is a young tree with a thin trunk.
I just keep on walking. I keep on walking closer to the scent.
I'm not in a pack unlike my parents who were in a pack.
The sun is rising.
Behind some trees in the same forest the wolf is in lurks a deer munching on some berries and a sapling that was waving because of the wind. The berries were sweet and the sapling was delicious thought the deer.
I'm picking up the same scent I got next to the river. It smells as if it was in a fight. Maybe it's another lonely wolf.
Big trees are everywhere.
I've been in this forest for 6 years.
I visit a cave. This cave is very special to me because this is where I was born.
Plants and and animals have internal structures and external structures to support survival.
Stem: external structures
The stem is the main stalk of the plant. Stems hold up leaves to the sunlight.
Phloem transports sugar produced in the leaves to the rest of the plant.
Stem: internal structures
Xylem transports water and minerals from the roots and gives it to the leaves.
Roots absorb water and minerals from the soil. They store food for the plant and even anchor the plant in the soil.
Roots
Leaves: external structure
Their job is to make food for the plant.
Leaves: internal structure
Chlorophyll is what makes leaves green. Leaves combine chlorophyll and light energy to make food energy.
Leaves
Sunlight
Gluclose is sugar
Water
Oxygen
Carbon Dioxide
food energy
solar energy
title
food energy
Olfactory bulb
Identifying smells gives the brain information about the animal's environment. It helps animals stay safe from predators and hunt prey.
I smell it, again.
The brain interprets the message as a smell.
Olfactory nerve
Message is sent from the nose to the brain
A wolf's instinct is that they show their teeth to show behavior.
The nasal cavity is an open space in your head behind your nose
Instinct: an inborn pattern of behavior.
Good smell molecule
Sense of smell.
Sense receptors
Bad smell molecule
I'm getting pretty close now but I still can't see it or hear it. I know it's a deer.
Some decisions and actions are instincts. These are present at birth and do not need to be learned.
Decisions animals make are either choices or learned behavior from their parents, siblings or members of their group.
A deers instinct is that they stomp their feet to scare and confuse their predator.
The two nostrils are the holes at the end of your nose.
Good smell molecule
The nose can smell because it contains special sense receptors.
I get closer to where the scent is coming from. Stomp, stomp, stomp. The deer is stomping now and I think it smells me. It doesn't scare me. Why would a deer stomp?
title
There are 3 parts to the ear.
Outer ear
Middle ear
Inner ear
Hearing
The outer ear collects sound waves caused by vibrations and sends them to the middle ear through the ear canal.
Outer Ear
title
Middle Ear: Sound waves vibrate the ear drum.
Middle Ear
The vibrating ear drum moves the three ear bones called ossicles.
title
Inner ear: The cochlea is filled with fluid and tiny hairs that move when sound vibrations travel into the cochlea
Inner Ear
The auditory nerve brings signals from the cochlea to the brain. Your brain interprets these electrical signals as sound. You can then make decisions based on this information.
Auditory Nerve
What is sound?
Sound is a type of energy. Vibration is the rapid movement of an object that makes sound. Sound moves in waves from one place to another. From their source, sound waves travel in every direction. Sound can move through all three states of matter, gas, liquid, and solid. Sound volume lessens as it moves away from its source. That is why sound volume is louder closest to its source and becomes softer as you move away from its source.
Sound
What is Frequency?
Frequency is the rate, or speed, of the vibrations that cause sound. The faster the vibrations, the higher the frequency. The slower the vibrations, the lower the frequency.
What is volume?
Volume is the measures of the amount of energy in sound, the more energy, the louder the sound.
Pitch is the word that describes how high or low a sound is. Pitch and the frequency of the sound wave go together. The higher the frequency, the higher the pitch. The lower the frequency, the lower the pitch.
Pitch and Frequency
Frequency is the number of sound waves per second. The higher the frequency, the higher the pitch of the sound. The lower the frequency the lower the pitch.
Video
Sound moves through all states of matter: solid, liquid, and gas.
Video
Sound travels in waves and can be loud or soft. The measure of volume of a sound wave is called amplitude. The louder the sound, the greater the amplitude. Amplitude is measured in decibels
Sight
Video
The pupil is the black center of the eye. It opens and closes to let the correct amount of light into the eye.
Pupil and Iris
The colored part of the eye is called the iris. It is located behind the cornea.
The window to the eye is the cornea. It focuses light as it enters the eyeball. After the light goes through the cornea, it passes through the lens. The lens focuses the light so the animal can see near and far objects.
Cornea and Lens
The retina is the back wall of the eyeball. It's like a screen. The light that passes through the lens is focused on the retina. The retina has millions of light sensitive cells. Rods can see black and white as well as shapes. Cones can see color.
Retina
The optic nerve carries signals from the retina to the brain. The brain interprets the signals as objects.
Optic Nerve
I see it, it's behind that tree. It's eating some grass.
title
My hearts starts to pound but then the deer looks the other way.
I stay low to the ground so I'm not visible.
I slowly start to walk toward the deer.
I'm really close now and I think I'm close enough to attack.
My feet are ready and so is my mouth. I leap at the deer and I bite the front right leg.
The deer starts to look in my direction.
It tries to run but the wound slows it down.
I charge at it and I bite the deers side.
The food eaten must now be digested in order for the animal to get 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.
Digestive System
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.
Mouth
Video
Esophagus
The esophagus is a tube from the mouth to the stomach. The bolus (chewed food) goes down the esophagus into the stomach.
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 enters the small intestine.
Video
Small Intestine
The food moves into the small intestine where enzymes secreted from the gallbladder, pancreas, and liver help break down the food into proteins, 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.
Large Intestine
Anything that is not absorbed is waste and is expelled from the body.
The End
Video
I go back to my den since I'm full because of that deer. Well now I don't have to hunt anymore. I look up and see the sun halfway up in the sky and I sense the smell of the forest. I see my big cave next to that big tree. I see butterflies and birds way up in the sky. I reach my cave and I feel the warm feeling I have when I'm in here. I hear loud birds outside of my cave. By the time I hear more birds my heart rate slows and I start to sleep.
Resolution
- Wolves use their ears to see if they can hear anything.
- They also use ear posture to communicate
- Wolves use their eyes for communication
- They also use their eyes to watch out for danger
Inphographic
- They use their smell to see if they can smell any prey.
- Smell is also their best sense
Wind, moving water, and glaciers all cause land to change. Weathering is the breaking down of rock. Erosion is the transport (movement) of weathered rock. Weathering and erosion work like a team to change the land.
Slow Changes To Earth
Wind can change the land. It causes weathering by blasting bits of sand and small rocks against big rocks, breaking them down bit by bit. Wind causes erosion by carrying weathered rock away to another place.
Wind
Ice melts under glaciers because of the intense presure. The melted ice goes through cracks in rocks under the glacier. The water freezes and melts making the ice expand eventually breaking the rock off the ground. The glacier pulls the rock with it.
Glaciers
My neighborhood would have a U-shaped valley. My neighborhood would also be colder and there might be a river. I know that there would be boulders or rocks that the glacier caried.