Bill Nye: Water Cycle

What is the main energy source that drives the water cycle?

• The sun
• Geothermal heat
• Wind energy
• The moon

When water changes from a liquid to a gas, what process is taking place?

• Freezing
• Sublimation
• Condensation
• Evaporation or boiling

Clouds are formed when water vapor cools and changes back into liquid water. This process is called:

• Evaporation
• Precipitation
• Condensation
• Sublimation

What type of precipitation can occur when the air temperature is below freezing?

• Hail, drizzle, or thunder
• Clouds, humidity, or wind
• Rain, fog, or mist
• Snow, sleet, or freezing rain

When rainwater soaks into the ground, it becomes:

• rain runoff
• groundwater
• surface water
• ocean water

Which step of the water cycle returns water from plants into the air?

• Transpiration
• Evaporation
• Condensation
• Precipitation

When water collects in lakes, rivers, and oceans, it is called:

• groundwater
• rainwater
• collection

• wastewater

What is the correct order for the main stages of the water cycle?

• Evaporation, Condensation, Precipitation, Collection
• Condensation, Evaporation, Collection, Precipitation
• Precipitation, Collection, Evaporation, Condensation
• Collection, Precipitation, Condensation, Evaporation

Which part of the water cycle involves water flowing downhill to rivers, lakes, or oceans?

• Runoff
• Condensation
• Evaporation
• Transpiration

The water cycle is described as a “cycle” because:

• It is a one-time event that does not repeat.
• It only occurs during the rainy season.
• It is a process that only affects oceans.
• It is a continuous process that repeats.