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Science - 3rd Grade EFL

Justin M Thibedeau

on 5 May 2016

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Transcript of Water

Video: The Water Cycle Rap
Important Idea:
Solar Radiation is energy transferred from the Sun to the Earth.
There are lots of 'shun' words (words that end in '-tion' .) How many did you hear?
Water is H2O. Pure H2O is tasteless, odorless, and colorless. The water on Earth is always moving. Every drop changes through three different states or forms.
The sun is the energy that keeps all the water moving.
The sun heats water and changes it into a gas.
Water vapor cools and sticks together making clouds.
Water droplets grow larger and heavier until they fall as rain, sleet, hail, or snow.
When aquifers are full of groundwater, the precipitation that stays above ground in rivers and lakes is called runoff.
Most precipitation seeps underground and stays in aquifers.
This is called
Water evaporates from plants.
State of water before the process?
State of water after the process?
liquid gas heat energy
liquid gas photosynthesis
no change gravity
no change gravity
no change gravity
gas liquid cold energy
Part II: Write a paragraph explaining how YOU (as a drop of water) move through the water cycle.
Vocabulary Check

Answer: 10
You will be graded on the following:
1. Did you use at least 5 to 6 of the vocabulary words?
2. Content:
(Did you write in the 'first person' point of view?)
"My story begins
far out in the
Pacific Ocean... "
BONUS: Extra points for anyone who gives me a surprise ending!
Evaporation, Condensation, Precipitation, Runoff, Infiltration, Transpiration
"I began to evaporate... "
"During condensation I... "
The Water Cycle
The kangaroo rat can live its whole life without a drink of water (3-5 years). Even though it lives in the desert, it doesn't sweat or pant to keep cool. It stays in its cool underground den all day, then comes out at night to look for seeds to eat.
Did you know that all the water on Earth right now, is the same water that has always been here? The water in your water bottle might have been dinosaur spit!
Fun Facts: Did you know?
But where did Earth's water come from?
Do you know the names of all five oceans?
Is drinking saltwater a good idea?
Only a tiny percent of freshwater is in lakes and rivers.
97.5% Saltwater
2.5% Freshwater
Plants, animals, and humans need to drink freshwater. Where is our freshwater?
Saltwater Verses Freshwater
Most of our freshwater is frozen. In cold places, like the North and South Poles and on very high mountains, ice and snow make glaciers, Glaciers stay frozen all year.
Where can you find saltwater?
in the oceans!
Most of the water that isn't frozen is underground. This is called groundwater.
Solid water is called ice. Ice is hard, like a rock. Water freezes and turns solid at 0° Celsius or 32° Fahrenheit. (0°C = 32°F)
Liquid water is wet and fluid.
Water as a gas or vapor is always in the air around us. When you boil water, the water changes from liquid to vapor. Water boils at 100° Celsius (100°C = 212° Fahrenheit).
How does water change states?
How do we use our freshwater?
Which do you think uses the most water?
Flushing the toilet, washing dishes and clothes, taking a shower, and cooking all use water.
Factories need water to make things.
Crops (plants that we eat and use) and livestock (animals that we eat) need lots of water.
Can you smell water?
Elephants can smell water 5 kilometers (km) away.
What percent (%) of the human body is water?
How long can humans live without drinking water?
between 55%-70%
3-5 days
What animal can live the longest without taking a drink of water?
Evaporation in Nature - The hot morning sun is evaporating the cool lake water.
Does everyone have enough water?
How can you conserve (save) water?
Solid: freezes at -38° C
Liquid: -38°C to 357°C
Gas: boils at 357° C
Can you change other things into solid, liquid and gas?
Side Note:
If H2O is water, then what is H2O2?
In case you were wondering...
Full transcript