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science winds/atmosphere

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wind
is air that is moving parallel to the ground(air that moves up or down is not called wind)
global winds
move across the entire planet
cover large areas
can not always feel them on the ground
blow at same speed and in the same direction
local winds
move across small areas
blow low in atmosphere
can always feel then on the ground
how can you measure wind
anemometer- measures how fast wind blows
wind vane- tells which direction the wind is going in
in which atmospheric layer does the temp. decrease as altitude increase
-thermoshpere/ stratoshere
-mesophere/troposhere
atmosphere
thin layer of air that protects the earth's surface from extreme temperature and harmful sun rays
atmospheric pressure
molecules closer to the surface are now more densely packed then those higher in the atmosphere because of the mass of gases pressing down from higher in the atmosphere
how many layers are in the atmosphere
5
solids include
dust, salt and pollen
liquids include
water droplets,and droplets from volcanoes
what forms smug
pollutants mixed together with oxygen and other chemicals
atmospheric gases include
nitrogen (78)
oxygen (21)
carbon dioxide, water vapor, argon (0-4)
ozone layer
protects earth from harmful rays
volcanoes produce
nitrogen and carbon dioxide but little oxygen
troposphere
contains water vapor and asses
where planes fly
where weather takes place
stratosphere
protects from sun
contains ozone layer
mesosphere
coldest region
meteors are visible
thermoshere
temp. is high
rays from sun are absorbed
exosphere
very few molecules
largest layer
space station
satellites
ionshere
radio waves travel
in between thermoshere and mespshere
radiation
waves
convection
flow
moves through gasses and liquids
needs molecules
conduction
contact
moves through solids
needs molecules