Show:
Characteristics of the Atmosphere
Section 1 Continued
Section 2
Section 3
clouds
100
what is the atmosphere
a mixture of gases that surround Earth
100
what is air pressure
is the measure of the force with which air molecules push on the surface
100
radiation is what
the transfer of energy by electromagnetic waves
100
what is wind
the movement of air caused by differences in air pressure
100
what is a cloud
a cloud is a collection of millions of tiny water droplets or ice crystals
200
what are the 2 main gases that make up the atmosphere
nitrogen and oxygen
200
what does thermo mean
heat
200
energy from the sun is absorbed by
the atmosphere
200
a narrow belt of strong winds that blow in the upper troposphere
jet stream
200
what are the three forms of clouds
cumulus stratus and cirrus
300
what is the order of the layers of the atmosphere from lowest to highest
troposphere, stratosphere, mesosphere, thermosphere
300
which layer makes up 90% of the atmosphere
the tropshere
300
what is the source that drives the whole greenhouse effect
the Sun
300
where on earth is the air pressure highest
30 degrees N and 30 degrees S
300
this forms when rain falls through a layer of freezing air
sleet
400
the layers of the atmosphere are defined by changes in 
temperature
400
where do the northern lights occur
the thermosphere
400
70% of the radiation that enters Earth's atmosphere is absorbed by clouds and by the Earth's what
surface
400
how fast can jet streams go
a maximum of 400 km/h
400
what is a psychrometer
an instrument that is used to measure relative humidity
500
nitrogen makes up how much of the earths atmosphere
78%
500
how thick is the ozone layer
3 millimeters thick
500
what is the greenhouse effect
the warming of the surface and lower atmosphere of Earth that occurs when water vapor, CO2, and other gases absorb and reradiate thermal energy
500
what is the difference between local winds and global winds
local winds occur over a short area and global winds go longer
500
name the types of clouds
nimbostratus stratocumulus stratus cumulus altocumulus cumulonimbus cirrostratus cirrus cirrocumulus