Ch 11 General Wave Properties

Question 1

What do waves transfer?

Answer 1

energy

Question 2

Define transverse wave.

Answer 2

Waves which travel in a direction perpendicular to the direction of the vibrations.

Question 3

Define longitudinal wave.

Answer 3

Waves which travel in a direction parallel to the direction of the vibrations.

Question 4

Name the two types of waves.

Answer 4

transverse wave and longitudinal wave

Question 5

Define the crest/trough of a wave.

Answer 5

Highest and lowest points of a wave that characterise transverse waves only.

Question 6

Define the amplitude of a wave.

Answer 6

distance from the rest or central position in either direction to the furthest point.

Question 7

Define the wavelength of a wave.

Answer 7

distance between any two consecutive crests or troughs (transverse wave)
OR
distance between any two consecutive compressions or rarefactions (longitudinal wave)

Question 8

Define the period of a wave.

Answer 8

Time taken to generate one complete wave/vibration.
OR
Time taken for the crests or any given point on the wave, to move a distance of one wavelength.

Question 9

Define the frequency of a wave.

Answer 9

Number of crest/trough that pass a point per second.
OR
Number of complete waves/vibrations generated per second.

Question 10

Define compression.

Answer 10

Region of a wave with higher pressure

Question 11

Define rarefaction.

Answer 11

Region of a wave with lower pressure

Question 12

Define wavefront.

Answer 12

The line that joins all the peaks of a wave or all identical points on a wave is called the wavefront.

Question 13

What is the formula for the speed of wave?

Answer 13

v = fλ

Question 14

What is the relationship between f and T?

Answer 14

f = 1 /T
OR
T = 1 / f