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55 terms

Science 5th Grade Weather Test 1 & 2

STUDY
PLAY
air pressure
the force put on a given area by the weight of the air above it
atmosphere
the air that surrounds the earth
barometer
a tool used to measure air pressure
humidity
the amount of water vapor in the air
insolation
the amount of the sun's energy that reaches earth at a given place and time.
weather
the condition of the atmosphere at a given place and time.
condensation
the changing of a gas into a liquid
evaporation
the change of a liquid into a gas.
relative humidity
a comparison between how much water vapor is in the air and how much the air could hold
water vapor
water in the form of a gas
What are three main gases found in our atmosphere
Nitrogen, Oxygen, & Carbon Dioxide
What affects temperature on earth?
sun, earths surface (land & water), clouds, atmosphere
troposphere
layer of the atmosphere that is closest to the Earth
What happens in the troposphere
is where we live & breathe, is also the part of the atmosphere where most of the Earth's weather occurs
stratosphere
layer begins about 6 to 10 miles above the Earth's surface and ends about 30 miles or 48 kilometers away from the Earth
What happens in the stratosphere
not very many clouds, is where airline pilots like to fly because less bouncy, temperatures increase with altitude until the top is reached
mesosphere
this layer goes to height of 50 miles from the Earth's surface,
What happens in the mesosphere
temperature drops with increase in altitude, very strong winds that blow, burning meteors may be seen in this layer
thermosphere
final layer is very thin and is exposed to radiation from the sun
What happens in the thermosphere
temperature very hot reach 1,100 degrees Fahrenheit or 600 degrees Celsius is divided into two parts - ionosphere and exosphere
ionosphere
very important for radio communications because it is able to reflect radio waves back to Earth, also creates auroral displays (Northern Lights)
exosphere
Outermost layer of the atmosphere, extending about 200-400 miles
anemonmeter
an instrument used to measure wind speed
cirrus cloud
form above 18,000 feet thin made of ice crystals
convection cell
a part of the atmosphere where air moves in a circular pattern because of an unequal heating
coriolis effect
wind will always curve to right
cumulus cloud
puffy clouds that appear to rise up from a flat bottom below 6,000 feet
fog
a cloud at ground level
greenhouse effect
when the Sun heat is trapped in the atmosphere, causing a rise in temperature
isobar
a map connecting places with equal air pressure
land breeze
breeze that blows from land to sea
precipitation
any form of water particles that fall from the atmosphere and hits the ground
sea breeze
a breeze that blows from sea to land
stratus cloud
look like flat sheets, occur below 6,000 feet, mean overcast or rainy day
water cycle
the process of Earth's water moving from place to place through evaporation, condensation, and precipitation
weather vane
an instrument used to tell wind direction
wind
air that moves horizontally
What is saturated air
air holding all the water it can at a particular time
transpiration
plants releasing water vapor from their leaves into the air
wind belts
doldrums, trade winds, Westerlies, Easterlies
What two factors affect the weather in Atlanta
the Gulf of Mexico and the Jet streams
How does relative humidity effect how you feel
If relative humidity is 100% and hot outside you feel hotter, if it relative humidity is low and cold you feel colder
Celsius
a metric temperature scale on which water freezes at 0 degrees and water boils at 100 degrees
Fahrenheit
a non-metric temperature scale on which water freezed at 32 degrees and boils at 212
What is the most common element of Earth's atmosphere
Nitrogen
Where is air pressure greater tall mountains or ocean shores?
ocean shores
What are two factors that affect air pressure
1. temperature and 2.amount of air above it (Earth's surface)
What happens to most of the sunlight that enters the Earth's atmosphere
most of the sunlight is absorbed by Earth's surfaces, land and water and warms them
Why is Northern Hemisphere warmer in summer than spring or fall when it is farther from the Sun
The Sun is directly hitting the surface of the Northern Hemisphere
The Sun's energy enables ________ from the water's surface to escape into the atmosphere
molecules
The second-largest source of water vapor is _____ from plant leaves
transpiration
What are two factors that determine the amount of water vapor in the air _______ and ________
temperature and air pressure
The amount of water vapor in a given volume of air at 100% humidity depends on the _________
temperature
The North & South Poles are colder because the Sun's rays hit the Earth's surgace at a _____ angle
Larger
In America we use the ________scale in recording temperature
Fahrenheit