Flashcards
Waves Chapter Review
Flashcards do conjunto (25)
- 1An example of a longitudinal wave isa sound wave
- 2Describe three situations in which you can predict the behavior of waves.Reflection- When you stand at a mirror and the light bounces of the mirror and into your eyes. Refraction- When you put a straw into a glass of water, the straw bends at an angle other than 90 degrees. Diffraction- When you have a tv on in one room and the door is open, in the other room, the sound waves spread out in all directions.
- 3An ocean wave has a wavelength of 9 m and a frequency of 0.42 wavelengths/s. What is the wave's speed?3.87 hrtz
- 4What might happen to an ocean wave that encounters a gap or a hole in the cliff along the shore?The ocean wave would diffract and spread out in all different directions, when it goes through the gap.
- 5Picture a pendulum. The pendulum is swinging back and forth at a steady rate. How could you make it swing higher? How is swinging a pendulum like making a wave?You could make it swing higher by pulling the pendulum higher. It represent a wave because it shows the transfer of energy from one place to another.
- 6Do you think the following is an accurate definition of a medium? Explain why or why not. A medium is any solid through which waves travel.No, because a medium doesn't have to be a solid.
- 7Two waves come together to form a new, smaller wave. This is calleddestructive interference.
- 8What is a setup in a wave tank, that would enable you to demonstrate diffraction?Water and a barrier with a small gap.
- 9For a wave refraction to take place, a wave mustenter a new medium.
- 10What is a statement which describes the relationship between frequency and wavelength?When frequency increases wavelength decreases.
- 11To identify the amplitude of a longitudinal wave, you would look for areas ofcrests.
- 12As you increase the amplitude of a wave, you also increase theenergy.
- 13What is a statement that best defines a medium of a wave?A material through which a wave travels.
- 14What is the definition of Amplitude?Amplitude is the distance between the middle of a wave to the crest or trough of the wave.
- 15The direction in which a transverse wave travels isat right angles to the disturbance.
- 16Multiple Choice questions!
- 17What is the definition of wavelength?A wavelength is the distance between each waves trough and trough, or the distance between each waves crest and crest.
- 18What is the definition of refraction?Refraction is when a wave goes through another medium and bends at an angle other than 90 degrees.
- 19What is the definition of a trough?A trough is the lowest point, or valley of a wave.
- 20What is the definition of reflection?Reflection is the bouncing back of a wave after it hits a surface it cannot pass through.
- 21What is the definition of interference?Interference is the meetig and the combining of waves.
- 22What is the definition of a crest?A crest is the top, or the peak, of a wave.
- 23What is the definition of medium?A medium is any substance a wave moves through.
- 24What is the definition of frequency?Frequency is the number of waves passing a certain place in a certain amount of time.
- 25What is the definition of diffraction?Diffraction is when there is a surface with a gap in it and when the waves pass through the gap, they spread out in all directions.
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- FlashCards sobre Waves Chapter Review, criado por zahruzuby em 11-05-2013.
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