Book 2, Question 131
Why Are There Clouds?
Have you ever looked up and found a cloud shaped like an animal? Clouds are tiny water drops in a crowd! Invisible vapor cools and clumps onto specks in the air.
From the book
Page from A Million Whys Book 2
More fun facts
- At any time, about two thirds of Earth's surface is covered by clouds.
- A band of clouds circles the equator month after month.
- Clouds reflect sunlight back into space, which helps cool Earth.
- Low clouds can even touch the ground.
- Clouds are sorted by how high they are and by their shape.
- Thin, wispy cirrus clouds are always made of ice crystals.
Sources: NASA Science, NASA Science, NASA, NOAA, NASA Space Place
Questions kids ask
Do other planets have clouds?
Yes. Venus is covered in thick clouds made of sulfuric acid.