Transcript Water and Weather: Evaporation and Condensation

Water and Weather:
Evaporation and
Condensation
Second Grade Science
Weather & Water Unit
Lesson 2
• In the last lesson, we talked about patterns
and cycles.
• A cycle is an event that repeats.
• A pattern is a thing that repeats.
The Water Cycle
• Water goes through a cycle.
• Here’s what happens in the water cycle.
Step 1
• Water starts in an
ocean, a lake, a river
or even a puddle.
Step 2
• The sun heats up the
•
•
water and causes it to
evaporate.
While most times you
can’t see the water vapor
in the air, it’s there. You
can see water vapor in a
rainbow.
Water turning into vapor
is called evaporation.
Step 3
• When the water cools
•
down, it groups
together to form
clouds.
When water groups
together, that’s called
condensation.
Step 4
• When the clouds get too
•
•
heavy, they have to get
rid of some of the water
inside them.
When that happens, it
causes rain, snow, sleet,
or hail.
When water falls to the
ground from the sky,
that’s called precipitation.
Step 5
• Sometimes the rain will
•
•
•
run back into a lake.
Sometimes the rain goes
right into the lake.
Sometimes the rain
leaves puddles.
This starts the water
cycle all over again.
What did you learn?
• When water changes
from water in a lake to
vapor in the sky, what
is that called?
• If you guessed evaporation, you’re right!
• When the clouds get
too heavy and let go
of water, that is called
___________.
• If you guessed precipitation, you were
right!
• If you guessed rain or snow, those are
types of precipitation.
• When water groups
together, it’s called
____________.
• If you guessed condensation, you were
right!
• All of the water that is on planet Earth has
been here since the very beginning.
• We never get a new supply of water.
• The water just keeps going through the
water cycle.
Credits
• All photos © Tammi Gearhart