| A | B |
|---|
| acceleration | a change in motion caused by an unbalanced force; a change in an object's speed and/or direction |
| change direction | altered path, adjusted route |
| drag | the force that shows an object's movement through a fluid such as air or water |
| energy | the ability to cause changes in matter; the ability to do work |
| gear | two toothed wheels that fit together so that one wheel will turn the other to create movement |
| heat | form of energy that is caused by the motion of molecules |
| incline plane | a simple machine made of a flat, sloping surface such as a ramp |
| kinetic energy | the energy of motion |
| load | something carried, especially something that is heavy |
| matter | anything that has material and takes up space |
| opposite forces | reverse effects upon the movement of an object |
| pulley | a simple machine made of a wheel that usually has a groove for a rope, chain or belt to wrap and move around |
| screw | a simple machine consisting of an inclined plane wrapped around a cylinder |
| solar energy | energy from the sun in the form of heat and light |
| unbalanced force | forces that are not equal |
| volume | the amount of space that is filled by an object |
| weight | - a measure of the force/pull of gravity on an object |
| work | when a force is used to move an object through a distance |
