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Ch. 13 Science
Ch. 13 Science Test - 5th Grade
| Question | Answer |
|---|---|
| motion | movement |
| constant motion | earth moving around the sun |
| variable motion | cars, trains, hearts... |
| speed | how fast an object is moving |
| velocity | speed plus direction |
| force | a PUSH or a PULL on an object |
| gravity | a force that pulls smaller objects toward larger objects |
| magnetism | a force that pushes or pulls magnets (or metals) |
| magnetic field | the area around a magnet where there is force |
| friction | a force that SLOWS DOWN or STOPS motion |
| What does friction cause? | Heat |
| work | MOVES |
| power | rate at which work is done |
| Newton's 1st Law | Inertia (things in motion stay in motion; things at rest stay at rest) |
| Newton's 2nd Law | Force = Mass x Acceleration |
| Newton's 3rd Law | any time force happens an equal force pushes the opposite way |