The Water Cycle
Water Changes State
A Polar Molecule
Testing Water Quality
Water on Earth
100

Series of processes by which water moves through the hydrosphere.

What is the water cycle?



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100

Water is the only substance that exists in these three states.

What is solid, liquid, and gas?



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100

A water molecule is  __ because it has a slight charge at each end. 

What is polar or polarity?



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100

High turbidity can affect ___ feeding organisms.

What is filter- feeding?



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100

This percent of on Earth is just water.

What is 70%?



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200

Gravity moves water from ___ to ____ areas. 

What is higher, lower?



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200

Happens when thermal energy is added to ice.

What is melting?



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200

A water molecule is made up of ___ oxygen atom.

What is one?



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200

Strong __ can be harmful to people and life. 

What is acids?



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200

Ice or water in a solid state is deposited into these. 

What is glaciers or ice caps?



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300

Water from precipitation that flows over Earth's surface.

What is runoff?



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300

When water vapor molecules lose thermal energy, ___ occurs. 

What is condensation?



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300

Substances important to life processes are ____ in water.

What is dissolved?



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300

Coral reefs can die when the temperature goes up by this much. 

What is 2 degrees Celsius?



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300

Water beneath the surface.

What is groundwater?



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400

Plants transpire when this happens. 

What is air temperatures increase?



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400

It takes ___ energy for molecules at the surface to break free.

What is less energy?



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400

Attractions cause the ___ and ___  to break apart in water.

What is sodium and chloride?



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400

When algae dies, oxygen levels in water do this.

What is decrease?



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400

Clouds are tiny droplets of this. 

What is water or ice crystals?



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500

Most water remains in storage areas for ___ periods of time. 

What is long?



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500

Evaporation occurs only at this.

What is the liquid's surface?



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500

Plants makes water molecules do this to cells.

What is stick?



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500

Tool used to measure turbidity.

What is a Secchi disk?



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500

Earth's frozen water.

What is cryosphere?



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