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Flashcards

P1.5-Waves

Kirill Romanenko Inglês 11 flashcards

What are the two types of waves?

Flashcards do conjunto (11)

  1. 1What is a wave?A wave is a disturbance that transfers energy in the direction it moves without transferring matter.What is a wave?
  2. 2What are the two types of waves?1.Transverse
    2.Longitudinal    What are the two types of waves?What are the two types of waves?
  3. 3Give me an example of a 1. transverse and 2. longitudinal wave.1.Water waves, radio waves, light rays, gamma rays...
    2. Sound, earthquake waves (P)...    Give me an example of a 1. transverse and 2. longitudinal wave.
  4. 4What is the amplitude of a wave?The amplitude of a wave is the hight of the waves crest (highest point) from it's undisturbed position.What is the amplitude of a wave?
  5. 5What is the wave equation?Wave speed (m/s) (V) = Frequency (Hz) (f) * Wavelength (m)What is the wave equation?
  6. 6Explain briefly: 1. reflection, 2. refraction, 3. absorption.1. Reflection is when a wave bounces off a surface e.g.: mirror.
    2. Refraction is when a wave enters a different medium and changes speed and direction.
    3. Absorption is when a wave loses it's energy to a surface and ceases to exist.
  7. 7What is the normal line?A normal line is an imaginary line which is drawn perpendicularly to the point at which a ray reflects or refracts of a surface.What is the normal line?
  8. 8What is the angle of reflection always equal to?The angle of incidenceWhat is the angle of reflection always equal to?
  9. 9What happens to a wave when it is refracted?The waves' wavelength decreases and it bends towards the normal line when it enters a denser medium. When a wave leaves the denser medium it's wavelength increases and the wave bends away from the normal line.
  10. 10How can refraction change the way we see things underwater?Underwater things look closer than they are for example water would look shallower.How can refraction change the way we see things underwater?
  11. 11What is the Doppler effect?The Doppler effect is when a wave source is moving therefore changing the waves' wavelengths. The waves moving in the direction of the wave source will get a shorter wavelength. Waves moving in the opposite direction will get a longer wavelength. This can change the way we hear or see things.

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FlashCards sobre P1.5-Waves, criado por Kirill Romanenko em 24-10-2015.
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