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Energy test
| Question | Answer |
|---|---|
| What is a wave? | A disturbance that transfers energy. |
| What is a medium? | A material through which a wave can travel. |
| What is a transverse wave? | Particles that move perpendicularly to the one direction the wave travels. |
| What is a Crest? | The point where the wave is at its highest. |
| What is a trough? | The point where the wave is at its lowest. |
| What is longitudinal wave? | When particles move back and forth in the same direction a wave travels. |
| What is compression? | When energy is transfered from one end of the spring to the other. |
| What is rarefaction? | When the energy of the spring spreads the coils apart. |
| What are electromagnetic waves? | Any wave that can travel without a medium. |
| What are mechanical waves? | Waves that require a medium. |
| What is amplitude? | The measurement of how far particles in the medium move. |
| What is wave Speed? | Is the speed that waves travel. |
| What is a wavelength? | The distance from any point in a given time. |
| What is force? | A push or a pull exerted on an object in order to change the motion of the object. |
| What is frequency? | The number of waves that pass a point in a given time. |
| What is work? | The use of force to move an object some distance. work= force x distance |
| What is hertz? | Is the measurement of frequency. One hertz is equal to one wavelength per second. |
| What is power? | The ability to do something or act in a particular way. |
| A book weighing 1.0 newton is lifted 2 meters . How much work is done? W=FxD | 2j |
| A set of pulleys is used to lift a piano weighing 1000 newton's. The piano was lifted 3 meters in 60 sec. How much power was used? | Power=50 watts |
| If you have an empty fish tank and a tank full of water, which one would allow a voice to travel faster? | The tank full of water, |
| If a drop of water lands in a body of water, it forms a surface wave, which is a combination of _______ and ________waves. | Transverse (perpendicular to the direction of the wave traveling) and longitudinal (back and forth) waves. |
| If a noisy toy is placed inside an airtight glass container, would you be able to hear a sound? | No, because there is no air to transmit the sound. |
| If the distance between the crest and the trough of the wave are increased, would the wave frequency increase or decrease? | Increase |
| What is an example of modeling the way a disturbance travels through a medium? | Fans in a stadium doing "the Wave." |
| If the speed of sound at 20 degrees C is 340 m/s, how long is the wavelength of an elephant call at a frequency of 5 cycles per second? | The wavelength = 68 |
Created by:
jordan koller
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