Chapter 20 - Mechanical Waves

Question 1

Transverse Wave

Answer 1

Perpendicular to the direction the wave moves

Question 2

Longitudinal wave

Answer 2

Vibrations in the same direction as the wave moves

Question 3

Crest

Answer 3

The high point of a wave

Question 4

Trough

Answer 4

Low point of a wave

Question 5

Wavelength

Answer 5

The distance from any point on a wave to the same point on the next cycle of the wave

Question 6

Frequency

Answer 6

Measure of how often it goes up and down

Question 7

Amplitude

Answer 7

Maximum amount the wave causes anything to move away from the equilibrium.

Question 8

Calculating speed

Answer 8

V= f• wavelength

Question 9

Inverse relationship - frequency - wavelength

Answer 9

Then the frequency goes up wavelength goes down

Question 10

Inverse relationship - amplitude & energy

Answer 10

More amplitude , greater energy

Question 11

Refraction

Answer 11

The wave bends as it passes into and through an object

Question 12

Reflection

Answer 12

Wave bounces and goes in a new direction

Question 13

Diffraction

Answer 13

Wave bends around an object or through holes in the object

Question 14

Constructive interference

Answer 14

When waves add up to make a larger amplitude

Question 15

Wave

Answer 15

Disturbance in matter