water cycle

Water Cycle

By: Justine Dickard

2nd grade science

• Purpose: understand where water is found and the water cycle

• Objectives:• Learn that water is present in the air and what

different forms water has• Learn water cycle

• Directions: • Discuss water cycle and look at slides. After lesson is

complete, then answer questions about water cycle

Water is in air as…

• Clouds• Steam• fog, • rain

• Ice• Snow• Sleet• hail

Water vapor

• Water changes from liquid to vapor (gas) when energy heat is added to it. It becomes evaporation.

• When water vapor cools it becomes liquid again. This is called condensation.

Clouds

• Water droplets in air form clouds• When droplets or clouds get heavy enough

they fall to earth and create precipitation (rain, snow, sleet, and hail)

Where does precipitation go?

• Some precipitation soaks into the ground• Rest of precipitation collects in ponds and

lakes or streams and rivers which flow into oceans

Solid water forms

• Water droplets change to solid (snow, sleet, or hail) when the weather is cold enough.

Water cycle

• You should now be able to understand the three main parts of the water cycle: Precipitation, evaporation, and condensation. If you have any questions, now is the time to ask.

Question #1

• What makes rain fall?

Water droplets get heavy in clouds and fall

Heat energy is added to water vapor

The weather gets cold enough to make it rain

Question #2

• Where does some precipitation go after it falls?Sky

Ground

Puddles

Question #3

Label evaporation, condensation, and precipitation on the cycle chart.

You are correct!

Rain forms when water droplets form cloudsand gets too heavy.

Try again!

• Review what happens when heat energy is added to water vapor

Try again!

When weather gets cold enough, it can formsnow, sleet, or hail.

Try again!

Please review information on precipitation

Correct!

Precipitation can soak into the ground or collectin ponds, lakes, streams, rivers, and oceans.

Try again!

Please review information on precipitation

Condensation

Precipitation

Evaporation

Activities

• Water cycle chart Water cycle activity. (n.d.). Retrieved from

http://www.kidzone.ws/water/cactivity1.htm

• Relf, P. (1996). The magic school bus wet all over : A book about the water cycle. Scholastic Paperbacks.