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Science: Middle School: Grades 6, 7 and 8 Quiz - The Water Cycle 1 (Questions)

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Only 3% of the Earth's water is fresh, and most of that is in the form of ice! Luckily, the tiny percentage of water suitable for drinking and keeping plants and animals alive is continuously recycled in a series of processes known as the water cycle. Through evaporation, water in the sea rises as vapor into the sky. Condensation then causes droplets to form and these become clouds. Rain (precipitation) falls from the clouds and onto the ground. Here the water runs downhill until it reaches a river. It then flows along the river and into the sea, where the whole process starts again.

What do we call fresh water falling from the atmosphere to the Earth's surface?

[ ]	Condensation
[ ]	Precipitation
[ ]	Evaporation
[ ]	Transpiration

Some of the water from rain, hail, sleet or snow collects in streams, rivers, lakes and the sea. Where does most of the rest of the water go?

[ ]	Storage tanks
[ ]	Reservoirs
[ ]	Into the ground
[ ]	In gutters

Plants draw water out of the ground and release water vapor into the atmosphere. What is this process known as?

[ ]	Transpiration
[ ]	Evaporation
[ ]	Condensation
[ ]	Precipitation

Water on the surface of roads and sidewalks disappears over time. What has happened to the water?

[ ]	It has precipitated
[ ]	It has condensed
[ ]	It has evaporated
[ ]	It has stopped existing

What happens to water vapor when it cools?

[ ]	It evaporates
[ ]	It precipitates
[ ]	It transpires
[ ]	It condenses

Which of these is condensation in the atmosphere?

[ ]	Tornadoes
[ ]	Clouds
[ ]	Lightning
[ ]	Hurricanes

What do we call water that is in a solid state?

[ ]	Liquid
[ ]	Water vapor
[ ]	Ice
[ ]	None of the above

What do we call water that is in the form of a gas?

[ ]	Liquid
[ ]	Water vapor
[ ]	Ice
[ ]	None of the above

When a kettle is boiling, it produces visible steam. What does this steam contain?

[ ]	Gas and liquid water
[ ]	Water as a solid and a gas
[ ]	Water in its liquid and solid forms
[ ]	Water as gas, liquid and solid

10.

What stage of the water cycle directly follows water's condensation in the atmosphere?

[ ]	Evaporation
[ ]	Transpiration
[ ]	Precipitation
[ ]	None of the above

Science: Middle School: Grades 6, 7 and 8 Quiz - The Water Cycle 1 (Answers)

What do we call fresh water falling from the atmosphere to the Earth's surface?

[ ]	Condensation
[x]	Precipitation
[ ]	Evaporation
[ ]	Transpiration

Fresh water can fall as rain, hail, sleet or snow

Some of the water from rain, hail, sleet or snow collects in streams, rivers, lakes and the sea. Where does most of the rest of the water go?

[ ]	Storage tanks
[ ]	Reservoirs
[x]	Into the ground
[ ]	In gutters

Groundwater is stored in soil and in underground layers of sand and permeable stone known as aquifers

Plants draw water out of the ground and release water vapor into the atmosphere. What is this process known as?

[x]	Transpiration
[ ]	Evaporation
[ ]	Condensation
[ ]	Precipitation

Plants release water vapor through tiny pores (holes) in their leaves - these pores are called 'stomata'

Water on the surface of roads and sidewalks disappears over time. What has happened to the water?

[ ]	It has precipitated
[ ]	It has condensed
[x]	It has evaporated
[ ]	It has stopped existing

Surface water evaporates and returns to the atmosphere as water vapor

What happens to water vapor when it cools?

[ ]	It evaporates
[ ]	It precipitates
[ ]	It transpires
[x]	It condenses

You can see water condensation after you've had a shower - the water vapor in the air condenses as it cools down, leaving water droplets on the walls, windows and bathroom mirror

Which of these is condensation in the atmosphere?

[ ]	Tornadoes
[x]	Clouds
[ ]	Lightning
[ ]	Hurricanes

That's why some clouds bring rain - the water vapor condenses and then falls to earth

What do we call water that is in a solid state?

[ ]	Liquid
[ ]	Water vapor
[x]	Ice
[ ]	None of the above

Water freezes and becomes a solid (ice) at 0^o Celsius

What do we call water that is in the form of a gas?

[ ]	Liquid
[x]	Water vapor
[ ]	Ice
[ ]	None of the above

Another name for water vapor is steam

When a kettle is boiling, it produces visible steam. What does this steam contain?

[x]	Gas and liquid water
[ ]	Water as a solid and a gas
[ ]	Water in its liquid and solid forms
[ ]	Water as gas, liquid and solid

Steam is invisible water vapor (gas). When we see steam from a kettle or shower, the steam also contains tiny water droplets (liquid), making it visible

10.

What stage of the water cycle directly follows water's condensation in the atmosphere?

[ ]	Evaporation
[ ]	Transpiration
[x]	Precipitation
[ ]	None of the above

Precipitation follows condensation - and the whole water cycle begins again!