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Position and Motion
Chapter 11 Salamander Class
| Term | Definition |
|---|---|
| simple machine | a tool that changes the size or direction of a force, makes work easier |
| lever | a bar that moves against an unmoving point, a shovel or seesaw |
| fulcrum | the unmoving point that a lever moves againt |
| ramp | a simple machine used to move a heavy object, its surface is slanted |
| gravity | a force that pulls down on everything on Earth |
| friction | a force that slows down moving things, when 2 things rubs together |
| force | a push or pull |
| speed | how far something moves in a certain amount of time |
| position | where something is in relation to other objects |
| motion | a change in the position of an object |