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52 Cards in this Set

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The state in which an object's distance from another is changing.
Motion
A place or object used for comparison to determine if an object is in motion.
Reference Point
The distance an object travels in one unit of time.
Speed
Speed in a given direction
Velocity
A push or pull exerted on an object.
Force
A force that is exerted when two substances are rubbed together; electrons are transferred by the rubbing.
Friction
The force that pulls objects toward each other.
Gravity
A measure of how much matter is in an object.
Mass
The line or course along which something moves, lies, or points.
Direction
The space or amount of space between two points.
Distance
To explain the meaning of.
Interpret
The point or area occupied by a something.
Position
A measurement of duration, or rate of.
Time
To equal or make equal in weight.
Balanced
Degree of brightness.
Magnitude
The substance of the universe.
Matter
Not in a state of balance.
Unbalanced
A tiny particle.
Atom
A Substance made of two or more chemical elements chemically combined.
Compound
A tiny, negatively charged, high-energy particle that moves around the nucleus of an atom.
Electron
A substance in which all the atoms are alike and which cannot be broken down into other substances.
Element
A combination of two or more atoms.
Molecule
Small uncharged particles in the nucleus of an atom.
Neutron
A chart of the elements showing the repeating pattern of their properties.
Periodic Table
Small, positively charged particles in the nucleus of an atom.
Proton
Solid, liquids, and gas
States of Matter
Vibrating rapidly
Vibrate
A Substance made of two or more chemical elements chemically combined.
Compound
A tiny, negatively charged, high-energy particle that moves around the nucleus of an atom.
Electron
A substance in which all the atoms are alike and which cannot be broken down into other substances.
Element
A combination of two or more atoms.
Molecule
Small uncharged particles in the nucleus of an atom.
Neutron
A chart of the elements showing the repeating pattern of their properties.
Periodic Table
Small, positively charged particles in the nucleus of an atom.
Proton
Solid, liquids, and gas
States of Matter
Vibrating rapidly
Vibrate
Objects revolving around the sun that are too small and too numerous to be considered planets.
Asteroid
The average distance from Earth to the sun - Abour 150 million kilometers.
Astronomical Unit
An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates.
Axis
A ball of ice and dust whose orbit is a long, narrow ellipse.
Comet
A giant structure that contains hundreds of billions of stars.
Galaxy
The distance that lights travels in one year.
Light Year
The galaxy of which the solar system is a part and which contains the stars that make up the Milky Way.
Milky Way Galaxy
Heavenly body other then a comet, asteroid, or staellite that travels in orbit around the sun.
Planet
The bouncing back of a wave when it hits a surface through which it cannot pass.
Reflection
The movement of an object around another object.
Revolution
The spinning motion of a planet about its axis.
Rotation
Any object that travels around another object in space.
Satellite
A star with the group of heavenly bodies that revolve around it.
Solar System
A natural body visible in the sky especially at night that gives off light or shines by reflection.
Stars
The star around which the planets revolve, from which they receive heat and light.
Sun
All of space and everything in it.
Universe