Waves

Question 1

What is a wave

Answer 1

A wave is a disturbance that transfers energy progressively from one point to another

Question 2

What do u call the ‘high point’ of a wave

Answer 2

Crest/ wavefront

Question 3

What do you call the ‘low point’ of a wave

Answer 3

Trough

Question 4

Define wavelength

Answer 4

Distance between consecutive crests or troughs

Question 5

What is an amplitude

Answer 5

Distance from crest or trough to its equilibrium

[S.I unit: Meter]

Question 6

What is the period of a wave

Answer 6

Time to generate one complete wave

[S.I unit: seconds]

Question 7

What is frequency

Answer 7

No. of complete waves generated per second

[S.I unit: Hertz (Hz) ]

Question 8

Define longitudinal wave

Answer 8

Particles vibrate parallel to the direction of the wave

Question 9

Examples of longitudinal wave

Answer 9

• Spring
• Sound waves
• Ultrasound waves

Question 10

Region where particles are very close

[longitudinal]

Answer 10

Compression

Question 11

Region where particles are far apart

[longitudinal]

Answer 11

Rarefaction

Take note of spelling

Question 12

Define transverse wave

Answer 12

Vibrate perpendicular to the direction of the wave

Question 13

Examples of transverse wave

Answer 13

• Ripples on the surface of water
• Vibrations in a guitar string
• Mexican wave in a sports stadium
• All electromagnetic waves
  > Light waves
  > Microwaves
  > Radio waves
  > X-rays

Question 14

Formula for frequency

Answer 14

1/ Period

Question 15

How to calculate speed of wave, wavelength an period

Answer 15

Use the triangle thing
Wave
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