Science4- test 5

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Mrs Barkers 4th grade Science Chapter 5

Three Fourths

this much of the earth is covered in water

Matter

is anything that takes up space and has weight

Molecules

are the smallest piece of a substance that still has the qualities of that substance

Hydrogen and Oxygen

this is what water is made of

Solids

molecules packed in THIS are packed CLOSE together

Gases

molecules in THIS are the FASTEST moving molecules

Gas

has no shape of its own and does not fill up a fixed amount of space

Surface Tension

the property of water that allows things to float in it

32° F

water changes to ice at this temperature

Heat

causes molecules to move more rapidly

Energy

is the ability to do work

Force

a push or pull on an object

Gravity

the force which draws things down toward the center of the earth

Heat

supplies the energy in steam

Nitrogen

the gas that makes up most of the air

Atmosphere

extends 1,000 miles

Air Pressure

the weight of the atmosphere creates THIS

Evaporation

the process by which liquid water becomes water vapor

Condensation

the process of changing water vapor back to liquid water

Nimbus

a rain or storm cloud

Precipitation

any form of water that falls from the clouds to the earth

Humidity

the amount of water vapor in the air

Snow

frozen water vapor formed in the air

Dew Point

the temperature which water condenses

Air Mass

a large body of air which has the same temperature and humidity

212° F

the temperature at which water boils

Hail

frozen raindrops that have been blown back into the cloud to form more frozen layers

Fog

a cloud on the ground

Be able to explain the water cycle

Be able to explain the water cycle

Be able to identify these types of clouds

Cirrus, Cumulus, and Stratus Clouds

Be able to identify these birds

California Gull and Common Loon

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