Page 328 - BenchMark_6-2

Experiments With Water How do clouds form?

They form as a result of condensation. Water
vapor in the air changes from a gas to a liquid as

Making Clouds the air cools. That makes tiny water droplets cling
to small particles of dust, and we see those
visible droplets as clouds.

When you look up at the sky, one of the most obvious

things you see is clouds. Clouds form as a result of

n. water in the form of a gas
water vapor
condensation, which means that water vapor in the air

changes from a gas to a liquid. As the air rises, it cools,
cools

v.
to become cooler; to make something cooler
and the reduced air temperature decreases its ability to

n. very small drops of water either in the air or on a surface
moisture
hold moisture. That makes tiny water droplets cling to

small particles of dust, and we see those visible droplets
particles

n. a very small piece of something such as dust, dirt, or sand
as clouds. Experiment with clouds by making your own.

Unit 9 | Experiments With Water