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Atmosphere weather patterns
Chapter 2 of the Earth's Atmosphere Unit
30
Science
7th Grade
04/13/2011

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Term
barometer
Definition
This is an instrument that measures air pressure.
Term
water droplets
Definition
What are low-altitude clouds composed of?
Term
air pressure
Definition
This is caused by the force of air molecules pushing in an area.
Term
In high altitudes.
Definition
Where do clouds made of ice crystals form?
Term
humidity.
Definition
The amount of water vapor in the air is called
Term
trade winds
Definition
These winds blow from the east to the west, moving from the horse latitudes towards the equator.
Term
monsoons.
Definition
Winds that change direction with the seasons are called
Term
calm winds.
Definition
The doldrums and the horse latitudes are both areas of
Term
low
Definition
Over short distances, wind blows toward areas of ___________________ pressure.
Term
particulates
Definition
Clouds form because water collects on these tiny solids in the air.
Term
cumulonimbus
Definition
This cloud type is most likely to bring thunderstorms.
Term
saturation
Definition
A condition in which the evaporation of water into the air is balanced by the condensation of water.
Term
the Coriolis Effect
Definition
Winds curve as they move across Earth's surface because of this.
Term
relative humidity
Definition
Condensation increases with greater _______________________.
Term
decreases
Definition
As altitude increases, air pressure usually does this.
Term
evaporation
Definition
This is defined as the process by which a liquid turns into a gas.
Term
global winds
Definition
Winds that travel thousands of kilometers in steady patterns.
Term
condensation
Definition
This is defined as the process by which a gas turns into a liquid.
Term
precipitation
Definition
This is liquid or solid water that falls to the Earth's surface.
Term
east
Definition
Jet streams generally flow in this direction.
Term
land breezes
Definition
Land cools faster than the sea, causing these to blow towards the water.
Term
westerlies
Definition
These winds blow from west to east, bringing us our weather.
Term
sleet
Definition
This type of precipitation is caused by water drops passing through a cold layer of air on the way down.
Term
freezing rain
Definition
This type of precipitation falls as water and freezes after it hits the ground.
Term
rain
Definition
This is the most common type of precipitation.
Term
snow
Definition
This type of precipitation forms from ice crystals merging in clouds.
Term
hail
Definition
This type of precipitation forms as ice pellets are hurled around by strong air currents inside a cloud.
Term
stratus
Definition
This is the type of cloud that you see when the whole sky looks gray.
Term
cumulus
Definition
These are puffy white clouds that usually have gray bottoms.
Term
cirrus
Definition
These are high altitude clouds that appear to have "tails".
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