Water Cycle & Pollution

What is the water cycle?

• the 3 forms of water
• the movement of water on, above, or below the surface of the Earth
• when water melts
• when clouds form

What part of the water cycle does this picture show?

• condensation
• precipitation
• evaporation

Snow, sleet, hail, and rain are all examples of  ________________. 

• evaporation
• condensation
• accumulation
• precipitation

Which best explains why runoff is important?

• It returns water to other locations on Earth
• It increases the chance of flooding
• It makes evaporation occur faster
• It increases condensation

What follows evaporation during the water cycle? How does this occur?

• Water evaporates into water vapor
• Water vapor condenses and forms a  cloud
• Water precipitates to the ground
• Water runs down into the hydrosphere

What is it called when plants give off water vapor as a waste product?

• condensation
• evaporation
• sublimation
• transpiration

Why is the sun important to the water cycle?

• The sun provides electricity for the water to flow to earth. 
• The sun provides Earth with light and heat energy to make the cycle work. 
• The sun plays no role in the water cycle. 
• The sun creates runoff for the water cycle to begin. 

The water cycle has

• a beginning and an end. 
• no beginning and no end. 
• only a beginning. 
• only an end. 

What is the water division of earth?

• ocean water 97.5%, fresh water frozen as ice 1.5%, & fresh water 1%
• ocean water 47%,  fresh water frozen as ice 3%, & fresh water 50%
• ocean water 1%, fresh water frozen as ice 90%, & fresh water 9%
• ocean water 33.33%, fresh water frozen as ice 33.33%, & fresh water 33.33%

What is the main source of freshwater on earth?

• ocean water
• well water
• pond water
• rainwater