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Force, Motion &Waves
Study material for our Physics Unit
| Question | Answer |
|---|---|
| Kinectic Energy | Energy of movement like a person running |
| Potential Energy | Stored energy such as a person sitting |
| Speed | The distance covered in an amount of time (speed equals distance divided by time) |
| Velocity | The direction of movement (velocity equals displacement divided by time) |
| Acceleration | When an object speeds up, slows down, or changes direction (is shown as a curve on a graph) |
| Force | mass x acceleration |
| Balanced force | An object that is not moving |
| Unbalanced force | An object that is accelerating |
| Net force | The total amount of force on an object |
| Intertia | An objects resistance to change in motion |
| Weight | Measures how much gravity is pulling down on an object and this can change depending on the gravitational pull present (weight equals mass x accelertation due to gravity) |
| Gravity | The force of a planet pulling on an object (Earth's is 9.8 meters/second squared) |
| Work | Force x Distance |
| Medium | Any type of matter including soilds, liquids, and gases |
| Mechanical wave | Waves that travel though matter by creating vibrations in a medium |
| Electromagnetic | Waves that do no require a medium and can travel through empty space |
| Crest | The top of the wave |
| Trough | The bottom of the wave |
| Wavelength | Measure of distance from one point on a wave to the next corresponding point |
| Frequency | The count of either the number of crests or the number of troughs that pass through a point in a given amount of time |
| Amplitude | The measure of the wave's height from the resting position |
| Spring Scale | A tool which measure force in Newtons |
| Mass | How much matter an object is made up of. |
| Compressional Wave | Waves whose particles move in the same direction that the wave travels |
| Distance | Space between two objects |
| Momentum | The product of the mass and velocity of an object |
| Resistance | Any mechanical force that tends to oppose motion |
| Friction | The resistance encountered when one body is moved in contact with another |
| Power | The rate of doing work; measured in watts |
| Transverse Wave | Any wave in which the direction of disturbance is perpendicular to the direct of travel |
| Compression | The process or result of becoming smaller or pressed together |
| Rarefaction | A decrease in the density of something; The part of a longitudinal wave which is stretched out, where as a compression is the part which is pushed together |
Created by:
MrsSavoy
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