Transcript The Water Cycle

The Water Cycle
01/20/15
11-1a pgs. 270-271
IN:
Where does our
water come from and
where does it go?
Terms to Learn and Objectives
Be able to explain the following terms:
*condensation *precipitation *runoff
*evaporation
*infiltration
*percolation
 Describe each change in the state of matter
that occurs with each stage of the water cycle.
 Identify the source of energy that drives the
water cycle.
 Illustrate the complete water cycle.

What is the water cycle?

Water Cycle – the continuous
movement of water from water
sources:
1.
2.
3.
4.
into the air
onto land
into and over the ground
back to the water sources
Why is the water cycle important?

The water cycle links all of the
Earth’s solid, liquid, and gaseous
water together.
How does water get into the air?

Evaporation – when liquid water
from the Earth’s surface and from
living organisms changes into water
vapor.
How does water get into the air?

Transpiration: the process by which plants
release water vapor into the air through their
leaves.
What happens to water when it is in the
air?

Condensation – when water vapor
cools and changes into liquid water
droplets that form clouds in the
atmosphere.
How does water get back onto the
ground?

Precipitation – rain, snow, sleet, or
hail that falls from clouds onto the
Earth’s surface.
What happens to water when it reaches
the ground?

Runoff – water flows across land
and collects in rivers, streams, and
eventually the ocean.
What happens to water when it reaches
the ground?

Infiltration – the movement of water
into the ground due to the pull of
gravity.
What happens to water when it reaches
the ground?

Percolation – the downward movement
of water through pores and other spaces
in soil due to gravity.
Aquifers form when the rock layer above is
porous and the layer below is impermeable.
http://www.greatbasinwater.net/pubs/index.php
Aquifers of Nevada
All the
energy
needed to
drive the
water
cycle
comes
from the
Sun.
OUT:
What causes
water to go from one
phase to another?