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rache
wave ND VIBRATION
| Question | Answer |
|---|---|
| what is a wiggle in time | vibration |
| what is a wiggle in space and time called | wave |
| if a pendulum is shortened, does the frequency increase or decrease | increase |
| what is a wiggle in time | vibration |
| what is a wiggle in space and time called | wave |
| what is a wiggle in time | vibration |
| what is a wiggle in space and time called | wave |
| red light has a longer wavelength than violet light. what is the greater frequency | violet light |
| if a pendulum is shortened, does the frequency increase or decrease | increase |
| where does the energy in a wave come from | vibrating source |
| if a pendulum is shortened, does the frequency increase or decrease | decrease |
| describe relationship between frequency and period of a wave | inverse relationship |
| if you double the frequency of a vibrating object, what happens to its period? | decrease by 1/2 |
| how, far in terms of the wavelength , does a wave travel in one period? | one wave length |
| how does the frequency of vibration of a small object floating in water compare to the number of waves passing each second | same |
| Where does the energy in a wave come from? | distance receiver. |
| what are examples of the medium through which the wave might travel | air and water. |
| does the medium in which a wave travels move along with the wave itself? defend answer! | No medium is disturbed but the energy moves. |
| what are the formula for the speed of a wave? (in words and symbol) | T=t/events or T=1/f |
| As the frequency of sound is increased, does the wavelength increase or decrease? give an example. | decrease: if a wave speed is 340 m/s and someone shouts across the room it will reach you 340 m/s every time by balancing out the frequency of wavelength. |
| what are the factors that affect the speed of a wave? | v=λf |
| if a wave vibrates up and down twice each second and travels a distance of 20 m each second. 1.what is it frequency? 2.it wave speed? | 1. 2 w/s 2. 20 m/s |
| sound from source A has a frequency twice as great as the frequency of Sound source B. compare the wavelengths of sound from the two sources. (assume all of these sound waves travel at the same speed.) | the lower the frequency the longer the wavelength. So source B has a longer wavelength the source A. |
| Distinguish between constructive and destructive interference. | two crest of two different waves overlap each other increasing the amplitude of a wave- constructive when a crest of one wave overlaps the trough of another they cancel |
| is interference a property of only some type of waves or off all types of waves? | all types of waves, water, sound, or light. |
| what causes standing waves? | interference of the original wave and a reflected wave. |
| what causes the Doppler effect for sound? | the pitch of sound is higher when he source moves towards you, and lower when the sources moves away. |
| how is pitch affected A. if the sound source is moving toward the observer? B. away from the observer | A. higher pitch B. lower pitch |
| does a boat moving through the water always produce a bow wave? deafened your answer | no, it depends on the speed of the boat. |
| describe the conditions necessary for a sonic boom to be heard | plane needs to go super sonic shock waves follower must reach ear drum. |
| if you encounter a sonic boom is that evidence that an aircraft of some sort exceeded the speed of sound moments ago to become supersonic defend your answer | no because sonic boom is only heard when reaches the listener |
| why is that a subsonic aircraft no matter how loud it may be, cannot produce a sonic boom? | At subsonic speeds, there is no overlapping of waves to produce high-pressure regions, where there is no shock wave, there is no sonic boom. |
| distinguish between constructive and destructive interference | constructive-in phase destructive-out of phase |
Created by:
Roth
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