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Force and Motion
| Definition | Term |
|---|---|
| clear outer covering of the eyeball | cornea |
| the sensitive tissue at the back of the eye that receives images and sends signals to the brain about what is seen | retina |
| the colored part of your eye | iris |
| behind the iris, focuses light rays onto the retina | lens |
| the opening that light passes through; it is black | pupil |
| connects the eye to the brain | optic nerve |
| waves that require a medium to travel through | mechanical wave |
| waves that can travel through a vacuum | electromagnetic waves |
| a form of energy that results when vibrating materials produce waves that move through matter | sound waves |
| a form a energy that moves in waves and has the ability to travel through a vacuum (space) | light waves |
| waves in which particles vibrate in an up and down motion (moving across); particles in the medium move perpendicular to the direction of the wave | transverse waves |
| waves in which particles of the medium vibrate back and forth along the path that the wave travels; particles in the medium move parallel to the direction of the wave | longitudinal waves |
| the combination of longitudinal and transverse waves | surface waves |
| a section of a longitudinal wave where particles are crowded than normal | compression |
| a section of a longitudinal wave where particles are less crowded than normal | rarefaction |
| the highest peak of a transverse wave | crest |
| lowest point between each crest of a transverse wave | trough |
| distance from the center point of the wave to the crest; measures amount of energy in a sound wave | amplitude |
| a measure how many waves pass a given point in a certain amount of time | frequency |
| a measure of the distance between the waves | wavelength |
| a substance or material that carries waves | medium |
| muscles in the larynx that vibrate to produce the voice | vocal cords |
| to transfer energy through space or material | transmit |
| to give off or send out | emit |
| to move or cause to move back and forth or from side to side rapidly so as to produce a quivering effect or sound | vibration |
| the highness or lowness of a sound | pitch |
| amount of sound produced | volume |
| shaped like the inside of a bowl | concave lens |
| shaped like the outside of a bowl | convex lens |
| light hits the object one way and bounces back in the opposite direction | reflection |
| light changes direction when it goes through an angle | refraction |
| bending or spreading light | diffraction |
| sometimes called vocal folds; two bands of smooth muscle tissue found in the voice box | vocal cords |
| is at the top of the neck of the windpipe (trachea) | voice box (larynx) |
Created by:
lchilton
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