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.

1. What do we call fresh water falling from the atmosphere to the Earth's surface?
[ ] Condensation
[ ] Precipitation
[ ] Evaporation
[ ] Transpiration
2. 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
3. Plants draw water out of the ground and release water vapor into the atmosphere. What is this process known as?
[ ] Transpiration
[ ] Evaporation
[ ] Condensation
[ ] Precipitation
4. 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
5. What happens to water vapor when it cools?
[ ] It evaporates
[ ] It precipitates
[ ] It transpires
[ ] It condenses
6. Which of these is condensation in the atmosphere?
[ ] Tornadoes
[ ] Clouds
[ ] Lightning
[ ] Hurricanes
7. What do we call water that is in a solid state?
[ ] Liquid
[ ] Water vapor
[ ] Ice
[ ] None of the above
8. What do we call water that is in the form of a gas?
[ ] Liquid
[ ] Water vapor
[ ] Ice
[ ] None of the above
9. 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)
1. 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
2. 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
3. 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'
4. 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
5. 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
6. 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
7. 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 0o Celsius
8. 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
9. 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!