4th Grade Science Test 5 Flashcards
How much of the earth is covered by water
three fourths
What is anything the takes up space and has weight
matter
What are the smallest piece of a substance that still has the qualities of that substance?
molecules
What makes up water?
hydrogen and oxygen
Molecules in which state (solid, liquid, gas) are packed close together?
solid
Molecules in which state (solid, liquid, gas) are the fastest-moving molecules?
gas
Water has a high ___, that allows object to float on it.
surface tension
Water changes to ice at what temperature?
32 degrees Fahrenheit
What causes molecules to move more rapidly?
heat
Solid, Liquid, Gas or Not Matter: air
gas
Solid, Liquid, Gas or Not Matter: ice
solid
Solid, Liquid, Gas or Not Matter: patriotism
not matter
Solid, Liquid, Gas or Not Matter: milk
liquid
Solid, Liquid, Gas or Not Matter: tree trunk
solid
Solid, Liquid, Gas or Not Matter: water vapor
gas
Solid, Liquid, Gas or Not Matter: your soul
not matter
Solid, Liquid, Gas or Not Matter: steam
gas
Solid, Liquid, Gas or Not Matter: hydrogen
gas
Solid, Liquid, Gas or Not Matter: paper
solid
What is the ability to do work?
energy
What is a push or pull on an object?
force
What is the force which draws things down toward the center of the earth?
gravity
What supplies the energy in steam?
heat
What gas makes up most of the air?
nitrogen
How far does the atmosphere extend?
1,000 miles
What does the weight of the atmosphere create?
air pressure
What is the process by which liquid water becomes water vapor?
evaporation
What is the process of changing water vapor back into liquid water called?
condensation
Know what these kinds of cloud look like. Look in your book or on a worksheet.
cirrus
cumulus
stratus
What is a rain or storm cloud called?
nimbus
What is any form of water that falls from clouds to earth?
precipitation
What is the amount of water vapor in the air?
humidity
What is the frozen water vapor formed in clouds?
snow
What is the temperature at which water condenses?
dew point
What is a large body of air that has the same temperature and humidity?
air mass
What is the temperature at which water boils?
212 degrees Fahrenheit
What are frozen raindrops that have been blown back into the cloud to form more frozen layers?
hail
What is a cloud on the ground?
fog
Be able to recognize these birds. Look them up.
California gull
common loon