| A | B |
|---|
| Mass | Amount of matter in an object |
| Matter | anything that has mass and takes up space |
| Quantity | an amount |
| Gravity | force of attraction between two objects that depends on the masses of the objects and the distance between the objects |
| Weight | gravitational force exerted on an object |
| Gravitational Force | force of attraction between masses |
| Sea Level | level of surface of ocean |
| Inertia | objects in motion tend to stay in motion, objects at rest tend to stay at rest, unless acted upon by a force |
| Force | push or pull on an object |
| Friction | force that opposes motion due to interaction of two surfaces trying to move across each other |
| magnetism | force exerted on an object (a magnet) that attracts most metals |
| magnetic poles | regions of strongest magnetic force |
| magnetic field | surrounds a magnet and exerts a force on other magnets and objects made of magnetic materials |
