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31 terms

Science4- test 5

Mrs Barkers 4th grade Science Chapter 5
STUDY
PLAY
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