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Motion
Unit F1 Study Guide
| Term | Definition |
|---|---|
| relative motion | motion that is based on a frame of reference |
| motion | any change of position |
| acceleration | change in the speed or direction of an object's motion |
| position | describes a certain place |
| gravity | force that pulls all objects towards each other |
| force | any push or pull |
| newton | metric unit of force |
| frame of reference | things around you used to describe motion |
| speed | measure of an objects change of position during a unit of time |
| weight | measure of the force of gravity on an object |
| friction | force that keeps two objects that are touching from easily sliding past each other |
| proton | particle in an atom that has a positive charge +1. They are found in the nucleus of the atom. |
| neutron | particle in an atom that has no charge, so it is neutral. They are found in the nucleus of the atom. |
| electron | particle that has a single negative charte -1. They move around the nucleus of an atom. |
| atom | tiny particles that make up all matter |
| What are the three particles that make up an atom? | protons, neutrons, electrons |
| To find a swimmer's speed, you need to know the distance he or she swam and the | time it took |
| to measure force, you can use a _____. | spring scale |