Bill Nye water cycle

What is the continuous movement of water on, above, and below the surface of the Earth called?

• The Earth's rotation

• The water cycle

• The atmospheric current

• The ocean tide

In what three states can water exist?

• Solid, liquid, and plasma

• Liquid, gas, and gel

• Solid, liquid, and gas

• Gas, plasma, and solid

What process describes liquid water changing into an invisible vapor?

• Condensation

• Precipitation

• Collection

• Evaporation

What two processes describe water vapor cooling and turning into liquid, then falling from the sky?

• Evaporation and collection

• Condensation and precipitation

• Sublimation and melting

• Freezing and boiling

What causes water to evaporate even when it is not boiling?

• Only the fastest-moving water molecules gain enough energy to become vapor.

• All water molecules move at the same speed, allowing them to escape.

• The water molecules are going fast enough to make it a liquid, not a vapor.

• Evaporation only occurs when water reaches its boiling point.

What is the continuous process where water evaporates, condenses, and precipitates back to Earth?

• The Hydrological Cycle

• The Evaporation Cycle

• The Condensation Loop

• The Precipitation Loop

Why does the outside of a cold glass become foggy?

• Water vapor in the air sticks to the cold surface and condenses into liquid.

• The cold glass causes the water inside to leak through.

• The glass is sweating due to the temperature difference.

• Dust particles on the glass attract moisture from the air.

What is necessary for water vapor to condense into liquid droplets?

• A surface for the water vapor to stick to.

• A warm, humid environment.

• High atmospheric pressure.

• Rapid heating of the air.

What part of the water cycle is represented by water falling from the sky?

• Evaporation

• Condensation

• Precipitation

• Collection

How do water droplets in clouds grow large enough to fall as rain?

• They absorb heat from the sun, expanding in size.

• They collide and combine with other droplets.

• They are pushed together by strong air currents.

• They attract dust particles, increasing their mass.