WATER CYCLE

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What is the chemical formula for Ice

H2O

What is the chemical formula for Water vapor ( water gas )

H2O

What is the chemical formula for liquid water

H2O

Harold wakes up on Halloween morning and notices that the grass in his yard is covered with frost. There was no rain that night. Harold examines the frost and discovers that the frost is just ice crystals. Where was the water located just before it was deposited as ice on Harolds grass ?

The water was in the air as water vapor

The only material in nature which exists as a solid, liquid, and gas at the temperatures found in earth's ecosystems

WATER

Water freezes at a temperature of ______ degrees celsius

Zero

Water has how many calories

Zero

T or F A glacier can lose ice both by melting and turn directly to water gas.

TRUE

T or F water molecules can be borrowed by plants during photosynthesis and used to make glucose sugar

TRUE

What does the term "SUBLIMATION" mean ?

sublimation is a phase change during which a solid changes to a gas

Dew forms when Water gas hits cold grass blades and changes to liquid water. This is an example of A. evaporation B. Condensation C. Sublimation

B. Condensation

When ice turns directly to water vapor ( water gas in the air ) this process is called A. evaporation B. Sublimation C. Deposition

B. Sublimation

Water boils at a temperature of _____ degrees celsius

100

Deb is watching a pan of water on the stove as she prepares to make Spaghetti. She notices that small bubbles are forming at the bottom of the liquid water. As more heat is added... the bubbles rise to the surface. The best explanation for the formation of these bubbles is A. The bubbles form as liquid water turns into water vapor ( water gas ) B. The bubbles form when water is broken down into Hydrogen gas and oxygen gas C. The bubbles for when The heat entering the pan turns water into air

A. The bubbles form as liquid water turns into water vapor ( water gas )

Deb is watching a pan of water on the stove as she prepares to make Spaghetti. She notices that small bubbles are forming at the bottom of the liquid water. As more heat is added... the bubbles rise to the surface. As more and more bubbles rise to the surface and pop... the humidity in the air in the kitchen should A. go up B. decrease C. Stay the same

A. go up

Deb is watching a pan of water on the stove as she prepares to make Spaghetti. She notices that small bubbles are forming at the bottom of the liquid water. As more heat is added... the bubbles rise to the surface. Deb wonders what material is inside the bubbles. Which choice below makes most sense ? A. The bubbles are full of air B. The bubbles are full of hot water gas ( steam ) C. The bubbles are full of carbon dioxide.

B. The bubbles are full of hot water gas ( steam )

Deb is watching a pan of water on the stove as she prepares to make Spaghetti. She notices that small bubbles are forming at the bottom of the liquid water. As more heat is added... the bubbles rise to the surface. As more and more bubbles rise to the surface and pop... the level of liquid water in the pan should A. go up B. decrease C. Stay the same

B. decrease

Students in a bus breathe out moist air. the bus windows are fairly cold at 45 degrees Fahrenheit. We would predict A. the bus windows will remain free of water B. liquid water will condense on the bus windows C. the bus windows will frost on the inside.

B. liquid water will condense on the bus windows

In the spring when the ground is still frozen. Snow melts. The liquid water is most likely to ____ at this time A. Soak into the soil B. run-off into ponds , Lakes, and rivers. C. Become part of ground water

B. run-off into ponds , Lakes, and rivers.

Holly opens a large chest freezer in her garage on a hot, humid summer day. When she opens the lid... a bunch of humid air enters the freezer and is trapped. Which of the following is most likely to happen ? A. The water gas ( humidity ) trapped inside the freezer will stay a gas. B. the water gas ( water vapor ) trapped inside the freezer will condense and form drops of liquid on the sides of the freezer. C. The water vapor in the freezer will be deposited on the cold sides of the freezer as solid ice. This will cause a buildup of frost inside of the freezer

C. The water vapor in the freezer will be deposited on the cold sides of the freezer as solid ice. This will cause a buildup of frost inside of the freezer

Water is important to living things because A. Water has lots of calories B. Water contains carbon which living cells can use C. Water dissolves most materials and this lets chemicals mix and react inside of cells

C. Water dissolves most materials and this lets chemicals mix and react inside of cells

Holly opens a large chest freezer in her garage on a hot, humid summer day. When she opens the lid... a bunch of humid air enters the freezer and is trapped. She notices what looks like a cloud in the air as it enters the freezer. This cloud of water droplets is caused by A. liquid water in the air condensing into a solid B. Ice falling to the earth C. Water vapor in the air condensing in the cold air coming out of the freezer. The water gas condenses into tiny water droplets, forming a cloud

C. Water vapor in the air condensing in the cold air coming out of the freezer. The water gas condenses into tiny water droplets, forming a cloud

Freezing

Change from liquid to solid

Vaporization

Change in phase from Liquid to gas

sublimation

Change in phase from solid to Gas

Frost forms when water vapor hits very cold grass blades and changes from a gas to a solid. This is an example of A. evaporation B. Condensation C. Sublimation D. Deposition

D. Deposition

Napoleon Dynamite wants to make the air in his home moist during the winter. Dry air is causing his lips to crack and he is running out of Chap stick. He decides to put water gas into the air by buying lots of house plants. Napoleon figures that the water he puts into the soil in the pots will be drawn into the leaves of the plant and then evaporate into the air. This process is called A. sublimation B. Deposition C. Cell respiration D. Transpiration

D. Transpiration

Name the process where water gas turns to a solid when it hits a cold-enough surface.

Deposition

T or F living organisms can get their energy from water

False

What three phases is water found in on the earth ?

Solid, Liquid, Gas

The change from water gas to a solid ( like when water gas in the air is deposited as a solid layer of ice on your windshield ) is called

deposition

Melting

solid changes to liquid


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