Transcript Ocean

Earth’s Weather Patterns
Atmosphere
Weather
Severe Storms
Miscellaneous
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Weight of air pressing
down on a unit of area.
Air Pressure
What is the atmosphere?
Layers of air that
surround Earth.
Which layer of the
atmosphere is the warmest?
thermosphere
What are the two main
gases in the atmosphere?
Nitrogen – 78%
Oxygen – 21%
Why do the regions near the equator tend
to be warmer than the poles?
The sun’s energy is
concentrated on a
smaller region at the
equator.
The boundary between
two air masses that collide.
front
The average of all weather conditions
in an area over a period of time.
Climate
The ratio of the actual amount of water vapor
in the air to the total amount of water vapor
the air could contain at that temperature.
Relative Humidity
What would we call an air mass
that formed over the northernmost
part of the Pacific Ocean?
Maritime Polar
Why does water vapor in the
atmosphere vary in different places?
Air at different temperatures
holds different amounts of
water
Forms when winds rotate violently
tornadoes
Starts as a tropical depression.
Occurs when the wind speeds reach
at least 74 miles per hour.
Hurricanes
Forms when warm,
humid air rises rapidly.
Thunderstorm
Form from differences in air pressure.
Blizzards
El Niño occurs every 3 to 7 years.
What happens to the surface
water in order for El Niño to occur?
Warming of the surface
water
Scientist that studies weather conditions
meteorologist
Prediction about the weather
forecast
What clouds would you most
likely see during fair weather?
Cirrus clouds
What affects most of the
weather in the United States?
Prevailing westerlies
Why can meteorologists make
predictions about hurricanes?
Hurricanes take days to form
and can last days.
Tie Breaker
Name three factors that influence climate.
Winds, oceans, humans