Water

The chemical compound of water is

• HO
• H₂O
• H₃O
• HO₂

Water is a universal solvent

• True
• False

Of the three blue dots in the image, the biggest one represents _____

• all of the water on our planet
• all of the salt water on our planet
• all of the liquid fresh water on our planet
• all of the surface freshwater that is accessible

Which example is a form of precipitation?

• Dew

• Fog

• Frost

• Hail

In which area would the rate of evaporation be the lowest?

• Over the ocean

• Over the mountains

• Over the rainforest

• Over the desert

As a part of the water cycle, water from Earth's surface enters the clouds and finally falls back to the ground in the form of rain. What is the correct sequence of processes water undergoes?

• Evaporation, Condensation, Precipitation

• Precipitation, Condensation, Evaporation

• Condensation, Evaporation, Precipitation

• Evaporation, Precipitation, Condensation

What would happen if the Sun is removed from the water cycle?

• The water cycle would not include precipitation but would continue with groundwater flow.

• The water cycle would no longer occur because the Sun provides the energy for evaporation and transpiration.

• The water cycle would no longer occur because the Sun provides energy for the formation of clouds.

• The water cycle would not include evaporation and transpiration but would continue with condensation.

A student draws a model to represent the precesses involved in the water cycle, as shown. To which process is the formation of clouds related?

• Condensation

• Evaporation

• Freezing

• Melting

The image shows various stages in the water cycle. During which stage does water flow back towards the sea as runoff?

• W

• X

• Y

• Z

On Earth, what process generates most of the water vapor?

• Condensation

• Evaporation

• Precipitation

• Transpiration