Force, Motion and Energy
Magnet
An object that attracts iron or steel
Matter
Anything that has mass and takes up space.
Star
A huge ball of gases in space that give off heat and light.
Pole
The ability of an object to float or rise in a liquid or gas.
Buoyancy
A large system of stars, dust, and gas.
Galaxy
Friction
The force that resists motion when two surfaces rub against each other.
Insoluble
A substance that will not dissolve in a liquid.
Axis
An imaginary line that runs through the center of an object.
A unit used to measure the loudness of sound.
Decibel
Density
The amount of matter compacted into a given volume of a substance.
One complete orbit around an object.
Revolution
Spring Scale
A tool used to measure the force of gravity on an object.
The weight of liquid that is forced out of position by an object that is floating.
Lunar Cycle