The Water Cycle: Question Preview (ID: 17169)

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As time goes by, and water goes through the water cycle again and again, the amount of water on Earth _______.
a) decreases
b) increases
c) remains the same
d) There is no way of knowing for sure.

How much of Earth's surface is fresh water?
a) 97%
b) 50%
c) 10%
d) 3%

Water vapor is a product of transpiration. Which of the following produces water vapor through transpiration?
a) animal
b) plant
c) human
d) ocean

How do droplets become heavy enough so th at the droplets fall as rain or snow?
a) The droplets gain mass from precipitation within the clouds.
b) The droplets bump together and form larger droplets.
c) The hotter air allows the droplets to solidify and fa ll from the clouds.
d) When precipitation occurs, extra water vapors forms into more droplets.

Water that infiltrates the ground can collect in _________.
a) aqueducts
b) aquifers
c) aquariums
d) aquaparks

What is the correct term for plants releasing water from their leaves, which then evaporates?
a) evaporation
b) condensation
c) precipitation
d) transpiration

What are the drops of water that form on cool surfaces such as grass during the night called?
a) steam
b) dew
c) rain
d) hail

What is the correct term for rising water vapor meeting colder air and turning back into water droplets?
a) condensation
b) precipitation
c) evaporation
d) none of the above

What happens to the molecules of water when evaporation occurs?
a) They become more dense and move slower.
b) They become more dense and move more quickly.
c) They become less dense and move more quickly.
d) They become less dense and move slower.

Along with the sun, what other force drives the water cycle?
a) friction
b) normal force
c) thermal force
d) gravity

The continual movement of water from Earth, to the atmosphere, and back to Earth is called the ____________ cycle.
a) evaporative
b) hydrophilic
c) hydrologic
d) hydrophobic

The energy that powers the water cycle comes from the _________.
a) wind
b) rain
c) plants
d) sun

Rain, sleet, and snow are types of ______.
a) condensation
b) transpiration
c) precipitation
d) evaporation

The process where precipitation enters rivers and streams.
a) runoff
b) erosion
c) infiltration
d) transpiration

The water that was around when dinosaurs roamed the Earth:
a) Is gone, and has been for a long time
b) Is about halfway gone
c) Is the same water we use today
d) Would be really dirty if it were still around

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