HOW DO FORMS OF WATER CHANGE? Lesson 2 Learning Goal: You will
understand how water changes form and apply what you know about the
water cycle. Slide 2 Forms Water Can Have Cold weather can freeze
water from a liquid to a solid. Warm temperatures in the spring and
summer keep water in liquid form. When water freezes it takes up
more space. Slide 3 Evaporation Water can also become a gas called
water vapor. Evaporation is the process of a liquid becoming a gas!
The Suns energy evaporates surface water. That then becomes water
vapor in the air. You cannot see water vapor but you can sometimes
feel it on a hot day. Slide 4 Condensation Water vapor in the air
can turn back into a liquid!! The process of water vapor changing
to a liquid is condensation! When the air cools, condensation turns
invisible water vapor back into drops of water. Small droplets form
clouds and fog. Large drops that form on plants are dew. Slide 5
The Water Cycle There is only a certain amount of water on Earth.
It must be used again and again. The movement of water from Earths
surface into the air and back again is the water cycle! Water
changes form or state as it moves through the water cycle. Slide 6
Precipitation When water particles in clouds grow in size and
weight, they fall faster! Water that falls to Earth is called
Precipitation!! The form of precipitation depends on the
temperature at Earths surface. Slide 7 The Water Cycle
