Science 5th Grade Weather Test 1 & 2

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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

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