| A | B |
|---|
| energy | the ability to cause change and do work |
| electrical energy | energy generated by the movement of electrically charged particles |
| force | a push or pull that causes an object to move, stop or change speed or position |
| friction | force between surfaces that resists the motion of one surface past another surface; friction creates heat |
| gravity | is an invisible force that pulls objects toward each other |
| kinetic energy | energy in motion |
| magnet | a rock or a piece of metal that can pull certain types of metal toward itself. |
| magnetism | is the force exerted by magnets when they attract or repel each other. |
| mechanical energy | energy that an object has due to its motion or position |
| motion | an object’s direction and speed |
| net force | combination of forces acting on an object |
| potential energy | stored energy an object has because of its position |
| radiant energy | energy sent out in the form of electromagnetic waves, heat, light, and radio waves |
| resistance | anything that slows something down |
| speed | how fast an object is moving |
| thermal energy | the energy an object has because of the movement of its molecules, and heat can be transferred from one object to another object. |
| work | the transfer of energy by a force acting on an object as it is displaced. |
