Chapter 4 Science Test Study Guide
Terms
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- pulley
- a wheel with a groove for a rope
- compound machine
- a machine made up of more than 1 simple machines
- the purpose of a simple machine
- to make work easier
- six simple machines
- lever, pulley, inclined plane, screw, wedge, wheel & axel
- inclined plane
- a ramp or sloping surface
- fulcrum
- the balance point of a lever
- simple machine
- a device, made of only a few parts that makes work easier
- unbalanced
- a ball hit by a baseball bat
- lever
- a bar that makes it easier to move things
- balanced
- 2 people pushing against a desk on opposite sides
- force
- a push or pull that causes motion
- friction
- a force that opposes motion