the blanket of gases that surrounds a planet.
the measure of force with witch air particles push on matter.
the amount of water vapor in the air.
the amount of water vapor the air could actualy compared with the amount it could hold at a given temperature.
condition of the atmosphere at a time and place
a very large body of air that has a similar temperatureand humidity through out
the boundary that forms between air masses.
a scientist who studies the weather
a pattern of weather that occurs in an area over a long period
What is made of the Earth's atmosphere?
gases.(nitrogen and oxygen.
Which are the characteristics of the layers in the atmosphere?
air pressure and temperature.
what surrounds you all the time?
the Earth's air.
Where did the gases in Earth's atmosphere come from?
From the molten rock .(as molten rock cooled, gases such as nitrogen, water vapor, and carbon dioxide were release.)
what process help the Earth have the oxygen has today?
how much amount of water vapor did the polar regions have?
how much amount of water vapor did the tropical regions have?
as much as 4% of the air may be made up of water vapor.
What happen when you are decended in an elevator?
the air pressure on your ears increased and your ears popped .
why did airplane cabins are pressurized?
to help passengers stay comfortable at the high altitudes at which most planes fly.
what is a barometer?
is the instrument used to measure air pressure.
how are the gases that made up the air?
constantly moving.(bump into and off other matter)
did the air pushes down?
pushes equally from all sides of an objects.
What is related to the force with which air pushes on matter?
temperature of the air.
how are the particles in cool air ?
are closer together than those in warm air.
Which have greater air pressure, cool air or warm air?
cool air has greater pressure.
What else affect the air pressure?
the amount of water vapor in the air.
How is the air pressure in the Earth's surface?
greater, because more air particles are above to push down .
which are the layers of the atmoshpere?
Thermoshphere, mesosphere, stratosphere, troposphere.
How are the particles in thermosphere?
When occurs the auroras that can be seen in the sky at high altitudes.?
when the particles in the thermosphere are disturbed by electrical energy from the sun.
what is mesosphere?
is the coldest layer and temperatures get cooler as you move higher.
what is stratosphere?
temperature increases with the altitude in this layer, contains most of the ozone.
what is ozone?
is a gas that absorbs harmful ultraviolet rays from the Sun preventing them from reaching Earth's surface.
What is troposphere?
the layer in which we live.75% of all the air is in this layer. temp. in this layer are warmed because is near Earth's surface.
What causes the wind moving?
the differences in air pressure.Move from areas of high pressure to low pressure.
what causes differences in air pressure ?
differences in air temperature.(air heated-particles move fast and farther apart)
what is convection?
the transfer of heat by the movement of air particles.
what is called the trade winds?
As warm air rises over the equator , it begins to cool, the pressure becomes high enough to cause the air to sink back towards Earth 's surface. the sinking air produces winds that blow near Earth's surface back toward the equator. Blow from east to west.
what are the westerlies winds?
blow close to Earth from west to east.
how did the local winds created?
the rising and sinking of air.(is near the ocean or lake or body of water)
what type of pattern helps keep the air temperatures of land near bodies of water warmer and even than temperatures inland.?
during day temperature of land increase, the air is replace by air that blows in from over the water. but at night when land has cooled down, the flow of air is reversed, water is warmer than land.
what happen when the air rises and cools near the equator?
water vapor int he air condenses. and the areas near equator have rains almost every day.
what affect the local weather?
the jet stream.
what is jet stream?
is a narrow belt of high-speed wind that blows in the upper troposphere and lower stratosphere.always move from west to east.
In what depends the water vapor that air can hold?
On the air temperature because warm air can hold more water than cool air.
when did the clouds form?
when air rises and cools.(Cooler air contains less water vapor)
what form the droplets of the clouds?
tiny particles in the air such as;dust, smoke and salt.
how did the cloud grow in size?
when as more water droplets or ice crystals form.
how did the cloud classified?
by their shape and their height.
which are the 3 main form of clouds?
cirrus, cumulus and stratus (cirrocumulus and cumulonimbus are a combination of these 3 forms)
what is a cirrus cloud?
thin and feathery is made of ice crystals.they formed where temp is 0 grade C.
what is a cirrocumulus cloud?
made of ice crystals and do not usually result in precipitation.
what is a cumulonimbus cloud?
also called thunderheads because they usually result in heavy rainfall or thunderstorm.
what is a cumulus cloud?
puffy clouds stack up on top of each other, form late in the day when air warmed by land is rising into atmosphere.
what is stratus cloud?
created above Earth surface and they are flat , white an produce mist or a steady drizzle.