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light/sound/motion
| Question | Answer |
|---|---|
| reflection | the bouncing of sound or light off an object |
| frequency | the number of vibrations per seconds |
| pitch | how high or low a sound is |
| volume | the loudness or softness of a sound |
| amplify | to enlarge expand or increase the volume of a sound |
| echo | a repetition of sound by the reflection of sound waves from a wall mountain or other obstructing surface |
| vibration | the movement of sound waves through a gas solid or liquid that creates sound |
| absorb | to take in or soak up |
| medium | a substance that occupies space like solid liquid gas |
| sonar | a method or device used for locating objects underwater using sound waves |
| opaque | material that does Not allow light to pass through |
| translucent | material allowing SOME light to pass through |
| transparent | material allows light to pass through |
| refraction | the bending or breaking of light as it moves from one material to another |
| concave lens | a lens that is thicker at the edges than it is at the middle |
| convex lens | a lens that is thicker at the center that it is the edges |
| kinetic energy | the energy of motion or moving |
| potential energy | the energy an object has because of its condition or position; stored energy |
| motion | the action of moving or changing places or position |
| force | a push or pull upon an object's interaction with another object |
| friction | the force that happens when two things rub together |
| weight | a measurement of how heavy something is; a measure of a pull of gravity on an object |
| mass | the amount of matter or weight of an object |
| speed | a measurement of distance over time; how fast something travels |
| gravity | a force that pulls everything towards the center of the Earth |
| Newton's 1st Law - Law of inertia | an object moving in a straight line will continue moving in a straight line unless acted on by an outside force also an object at rest will remain at rest unless acted upon by an outside force |
| Newton's 2nd law | Force will cause a change in motion of an object. The change in motion depends on the amount of force and the mass of the object |
| Newton's 3rd law | for each action, there is an equal and opposite reaction |
Created by:
Christopher10
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