Transcript About what percent of the Earth is covered with ocean?

About what percent
of the Earth is
covered with ocean?
75%
When
water evaporates, it
changes from a
________________
to a ________________
Liquid
to a gas
What
happens when
water vapor in the air
cools?
It
condenses and
we get
precipitation
Name
four types
of precipitation
Rain
Snow
Sleet
Hail

How
much of the
Earth’s water is
drinkable?
Less
than 1%
Where
does the
drinking water in
Davis come from?
21
Underground
wells
What
causes wind?
Hot
air rises and cold air
sinks causing convection
currents
Or high pressure and low
pressure areas meet
What
is the source of
energy for all weather on
the Earth?
The
Sun
Why does the sun
heat the Earth
unevenly?
Because
the Earth is
sometimes tilted
towards the sun and
sometimes away from
the sun
What
do we call the
contact between air
masses with different
temperatures?
A
Front
Why
do winds swirl on
the Earth?
Because
the Earth
rotates on its axis
What
is this swirling
effect on the Earth called?
The
Coriolis Effect
What
kind of weather will
we get if a cold front
comes in?
Severe
weather that may
include thunderstorms,
hail, or tornadoes
What
kind of weather
will we get if a warm
front moves in?
Gentle
rain followed
by warm, clear days
In
North America what
direction do fronts tend
to move in?
From
west to east
As
you go higher into the
Earth’s atmosphere, what
happens to the air
pressure?
It
decreases
Compare
the density of
warm and cold air
 Cold
air is more dense than warm air
(warm air is less dense than cold air)
 What
kind of severe weather can
happen when warm, moist air
along the ground rushes
upward, meeting cooler, drier
air.
A
tornado
Where
do hurricanes form?
Over
warm
ocean water
 What
happens when when liquid
and ice particles above the
freezing level collide, and build
up large electrical fields in the
clouds?
Lightning