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Force
| Term | Definition |
|---|---|
| What are the 3 types of force? | Magnetism, gravity and friction |
| Repel | When like poles on 2 magnets push apart (South pole and South pole; North pole and North pole) |
| Attract | When opposite poles on 2 magnets pull together (North pole and South pole) |
| What are the 4 magnetic metals? | SINC: Steel, Iron, Nickel and Cobalt (NOT COPPER) |
| Gravity | a force that pulls objects towards each other; a non contact force |
| Friction | a force that stops or slows motion when objects rub together; acts in the opposite direction of motion; contact force |
| Magnetism | a force of a push (repel) or pull (attraction) of 2 magnets; when a magnetic metal pulls towards a magnet; non contact force |
| Are all metals magnetic? | NO!! Only steel, iron, nickel and cobalt |
| Spring scale | a tool that measures force in NEWTONS (N) |
| Independent Variable | the ONE thing that CHANGES in an experiment; what "I" will purposely change in an experiment |
| constant or controlled variable | what stays the same in an experiment |
| hypothesis | a prediction in an experiment; educated guess: it is written in an If.............................then....................format |
| How does the surface of the ramp affect the distance a toy car will travel? What is the independent variable? | Surface of the ramp |
| Force | a push or a pull; it can change the position and/ or the motion of an object |
| motion | a change in the position of an object |
| position | the place where something is located |
| pull | the act of applying force to move something towards you |
| push | the act of applying force to move something away from you |
| reliability | an experiment or investigation provides the same results after repeated trials; minimum of 3 trials |
| dependent variable | The item being observed or measured (the effect) |
| Balanced force | when forces are equal and there is NO MOTION! |
| Unbalance force | When forces are NOT equal; it causes MOTION! |
| Greatest force | motion always goes towards the greatest force |
| Spring scale | the scientific tool used to measure force |
| Newtons (N) | the unit of measure to measure force |
Created by:
BaldwinJ
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