The Water Cycle

What percentage (%) of water do we have in our planet Earth?

Why is it called the water cycle?

• Because water drops have a circular shape.

• Because it is a process that never ends since the stages are regularly repeated in the same order.

• Because water moves like a bicycle.

Where does the energy that powers the water cycle come from?

• The sun

• The plants

• The animals

• The clouds

What would happen if the sun was removed from the water cycle?

THERE IS MORE THAN 1 CORRECT ANSWER!

• The water cycle could not start, because without the heat of the sun evaporation can't take place.

• The water cycle would only have 3 stages: condensation, precipitation and collection.

• We would not have any more water, because it wouldn't be recycled.

What is evaporation?

• When water changes to gas and rises into the air.

• When water freezes.

• When water disappears.

When water evaporates, it turns into an invisible gas.

How do we call this gas?

• Water gas

• Evaporated water

• Water vapor

What is the correct term for the change of water vapor into water droplets?

• Evaporation

• Condensation

• Precipitation

• Collection

True or False:

When water falls from the sky in the form of rain, snow or hail it is called PRECIPITATION.

• True

• False

The accumulation of water droplets into bodies of water like oceans, lakes or rivers is called ______________.

• Collection

• Precipitation

• Evaporation

• Condensation

As time goes by and water goes through the water cycle again and again, the amount of water on Earth ___________.

• increases

• decreases

• stays the same