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We pasted the text below (Unit 3 reading: The Water Cycle (written for this page)) and chose 10 questions, medium difficulty, multiple choice, true/false, short answer, fill in the blank. Generated on 2026-10-21 with the free plan's model. Nothing below has been edited — including the parts we would fix.

Unit 3 Reading: The Water Cycle

Water on Earth is always moving. The water cycle describes how water travels between the oceans, the air and the land, and it is powered mainly by energy from the Sun.

Evaporation is the process in which liquid water turns into water vapour. Most evaporation happens from the surface of the oceans, which cover about 71 percent of the planet. Plants also release water vapour through tiny pores in their leaves; this is called transpiration. Together, evaporation and transpiration are sometimes called evapotranspiration.

As warm, moist air rises, it cools. Cooler air cannot hold as much water vapour, so the vapour condenses into tiny droplets around particles of dust or salt. This is condensation, and billions of these droplets form clouds.

When droplets in a cloud collide and grow heavy enough, they fall as precipitation. Precipitation can be rain, snow, sleet or hail, depending on the temperature of the air it falls through.

Water that reaches the ground can follow several paths. Some flows over the surface into streams and rivers as runoff. Some soaks into the soil in a process called infiltration and may become groundwater, stored in layers of rock called aquifers. Some is frozen for long periods in glaciers and ice sheets, which hold most of the planet's fresh water.

Human activity affects the cycle. Paving roads and car parks reduces infiltration and increases runoff, which can lead to flooding. Cutting down forests reduces transpiration in a region.

1. Multiple choice

   1. What process describes liquid water turning into water vapour?

   • Transpiration
   • Condensation
   • Evaporation (correct answer)
   • Precipitation

   Evaporation is the process where liquid water is converted into water vapour, primarily occurring from the surface of oceans. Transpiration is specifically the release of water vapour from plants, while condensation and precipitation are later stages in the water cycle.

2. Multiple choice

   2. What is the term for the combined processes of evaporation and transpiration?

   • Condensation
   • Evapotranspiration (correct answer)
   • Infiltration
   • Precipitation

   Evapotranspiration is the term that encompasses both evaporation from water bodies and transpiration from plants. This term highlights the role of both processes in the water cycle.

3. True / false

   3. True or False: Cooler air can hold more water vapour than warm air.

   • True
   • False (correct answer)

   Cooler air cannot hold as much water vapour as warm air, which is why vapour condenses into droplets in cooler temperatures.

4. Multiple choice

   4. What happens when cloud droplets collide and become heavy enough?

   • They evaporate
   • They form glaciers
   • They fall as precipitation (correct answer)
   • They condense into vapour

   When droplets in a cloud collide and grow heavy enough, they fall to the ground as precipitation, which can manifest as rain, snow, sleet, or hail depending on air temperature.

5. Fill in the blank

   5. Fill in the blank: Water that soaks into the soil is called _____?

   Answer key: infiltration

   Infiltration is the process by which water seeps into the soil after precipitation, contributing to groundwater supplies.

6. Multiple choice

   6. What is a major consequence of paving roads and car parks on the water cycle?

   • Increased infiltration
   • Reduced runoff
   • Increased runoff (correct answer)
   • Enhanced transpiration

   Paving surfaces reduces the amount of water that can infiltrate into the ground, leading to increased runoff, which can contribute to flooding in urban areas.

7. True / false

   7. True or False: Glaciers and ice sheets contain most of the Earth's fresh water.

   • True (correct answer)
   • False

   It is true that glaciers and ice sheets hold the majority of the planet's fresh water, making them critical components of the Earth's hydrological system.

8. Short answer

   8. How does cutting down forests affect the water cycle?

   Answer key: Reduces transpiration

   Deforestation leads to a decrease in transpiration, as fewer trees release water vapour into the atmosphere, which can disrupt local weather patterns and the water cycle.

9. Multiple choice

   9. What is the primary energy source that powers the water cycle?

   • Wind
   • The Sun (correct answer)
   • Geothermal heat
   • Electricity

   The Sun provides the energy necessary for evaporation and drives the entire water cycle by heating water in the oceans and facilitating the movement of water in various forms.

10. Fill in the blank

    10. Fill in the blank: The process of water falling from clouds as rain, snow, sleet, or hail is called _____?

    Answer key: precipitation

    Precipitation is the term used to describe the various forms of water that fall from clouds to the Earth's surface, including rain, snow, sleet, and hail.