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What is a meteorologist?
A meteorologist is a scientist who studies weather.
Evaporation occurs when the sun heats water causing it to change into water vapor.
What is humidity?
Humidity is the amount of water vapor in the air.
Describe what happens during condensation.
, vapors collect and change into tiny droplets of water forming clouds.
What is water vapor?
is formed when water changes into an invisible gas.
What is ground water?
is fresh water
that is found below
the earth's suface.
True or False....
Water molecules are always moving?
Water molecules are always moving
What determines how fast molecules move?
determines how fast
molecules move. As the temperature rises, molecules move faster
As the temperature falls, molecules move slower.
Water is a substance that can exist in three forms. Name them.
can exist in the form of...
What makes phase change possible?
Adding heat or taking away heat is what makes phase change possible.
- a) ice + heat = water (liquid)
- b) water + heat = steam (water vapor)
- c) water - heat = ice (solid)
Where is most of the Earth's water found?
Most of the Earth's water
is found in its oceans.
Where is the Earth's FRESH water found?
Earth's FRESH water
- 1. underground as ice
- 2. in lakes
- 3. streams
- 4. rivers
What kind of day is it when the air is sticky (or contains water vapor)?
It's considered a HUMID
day when the air is very sticky with water vapor.
Does cold air hold more or less water vapor than warm warm air?
Cold air holds less
water vapor than warm air.
Name some ways that fresh water is wasted.
can be wasted by...
- 1. filling a bathtub
- 2. hosing sidewalks
- 3. running water when you brush your teeth
- 4. watering lawns
Why is it important to conserve water?
It's important to conserve water because there is a limited amount of fresh water that you can drink and use.
How can you conserve water?
Water can be conserved by....
1. shutting the water off when brushing your teeth
2. fix broken faucets
3. reduce the number of times you flush the toilet
4. only run dishwasher when it is full
Describe the steps of the Water Cycle....
1. The sun heats bodies of water (oceans, lakes, rivers, etc.) The water evaporates and becomes water vapor that moves into the air.
2. Water vapor rises high in the air. The air cools. The water vapor condenses into tiny water droplets to form clouds.
3. Billions of drops come together to form bigger drops of water. When the drops are too heavy, they fall to the Earth's surface as rain, snow or hail.
4. Some of the precipitation falls into rivers, lakes, and oceans. Some soaks into the ground. Rivers and ground water flow downhill into oceans and lakes.
5. The cycle repeats and continues.