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48 Cards in this Set

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the smallest particle of an element
Atom
What are the three parts of an atom?
electrons, protons, and neutron.
Which part of an atom has negative charge?
electron - a tiny, negatively charged particle that moves around the nucleus of an atom.
Which part of an atom has positive charge?
proton - a small, positively charged particle in the nucleus of the atom.
Which part of an atom has no charge, or neutral?
neutron - A small particle in the nucleus of the atom, with no electrical charge.
a substance that cannot be broken down into other substnaces by chemical or physical means.
element
a very well mixed mixture. the best mixed
solution
a measure of how much matter is in an object
mass
a measure of the force of gravity on an object
weight
the amount of space that matter occupies
volume
the measurement of how much mass of a substance is contained in a given volume
density
the force pushing on a surface divided by the area of that surface.
pressure
a change in a substance that does not change its identity, for example, a change of state
physical change
a change in which one or more substances combine or break apart to form new substances
chemical change
the number of protons in the nucleus of an atom
atomic number
the change of state from a liquid to a gas.
vaporization
the process that occurs when vaporization takes place inside a liquid as well as on the surface.
boiling
the process that occurs when vaporization takes place only on the surface of a liquid.
evaporization
the change of state from a gas to a liquid.
condensation
the change in state from a solid to a liquid.
melting
the change in state from a liquid to a solid.
freezing
the layer of gases that surround the earth
atmosphere
What are the four layers of the atmosphere?
the stratosphere, the thermosphere, the mesosphere, and the troposphere.
What does the thermosphere further divide into?
The thermosphere further divides into the ionosphere nad the exosphere.
a form of oxygen that has three oxygen atoms in each molecule instead of the usual two.
ozone
As the altitude increases, tmeperature _________.
decreases
the average amount of energy of motion in the molecules of a substance.
temperature
a force that is the result of the weight of a column of air pushing down on an area.
air pressure
have a definite volume and a definite shape
solids
have a definite volume but no definite shape
liquids
an instrument to measure temperature, consisting of a thin, glass tube with a bulb on one end that contains a liquid, usually mercury or alcohol.
thermometer
an instrument used to measure changes in air pressure.
barometer
How many kinds of barometers are there, and what are they called?
There are two barometers, and they are called mercury barometers and aneroid barometers.
an instrument used to measure wind speed.
anemometer
Clouds of all kind form when ........
water vapor in the air becomes liquid water or crystals.
the temperature at which condensation begins.
dew point
Clouds that form less than 2 kilometers above the ground and look like fluffy, rounded piles of cotton.
cumulus clouds
Wispy, feathery clouds made mostly of ice crystals that form at high levels, above about 6 kilometers.
cirrus clouds
Clouds that form in flat layers.
stratus clouds.
Any form of water that falls from clouds and reaches Earth's surface
precipitation
What are the four types of precipitation?
Rain, Sleet, Hail, Snow
What are the four major types of air masses that influence the weather in North America?
maritime tropical, continental tropical, maritime polar, and continental polar!
Warm, humid air masses form over oceans near the tropics. Those that form over the Gulf of Mexico and the Atlantic Ocean move first itno the southeastern United States.
Maritime tropical
Cool humid air masses, often bring fog rain and cool temperatures to the west coast.
Maritime polar
Hot, dry air masses that form in summer over dry areas, and occasionally move northeast bringing hot, dry weather ot the southern Great Plains.
Continental tropical
Large continental polar air masses that bring cool or cold air towards the Artic Circle and can bring bitterly cold weather with very low humidity.
Continental polar.
The area where the air masses meet and do not mix.
a front
What are the four types of fronts?
Cold fronts, warm fronts, stationary fronts, and occluded fronts.