Wave Interactions & Interference - Lesson Review

Definition: spreading out of waves as they pass around a barrier Terms a. diffraction b. wave interaction c. reflection d. constructive interference e. refraction f. destructive interference g. wave interference

a

Ways that waves may interact with matter include: a. diffraction. b. destructive interference. c. constructive interference. d. all of the above

a

Which statement about destructive interference is true? a. It occurs when waves pass through each other. b. It results in a wave with a higher frequency. c. It occurs when waves interact with matter. d. It always produces a standing wave.

a

Definition: any interaction of waves with matter Terms a. diffraction b. wave interaction c. reflection d. constructive interference e. refraction f. destructive interference g. wave interference

b

If the length of an obstacle is greater than the wavelength of a wave, you would expect to see: a. no diffraction. b. very little diffraction. c. a lot of diffraction. d. wave interference.

b

Reflected waves differ from the original waves before they were reflected in their: a. speed. b. direction. c. frequency. d. wavelength.

b

Refraction occurs because waves: a. cannot travel through an obstacle such as a wall. b. travel at different speeds in different media. c. interfere with their reflected waves. d. none of the above

b

Definition: bouncing back of waves from a barrier Terms a. diffraction b. wave interaction c. reflection d. constructive interference e. refraction f. destructive interference g. wave interference

c

__________ interference increases wave amplitude.

constructive

A standing wave is a wave that: a. is not moving. b. has an upright direction. c. is taller than other waves. d. appears to be standing still.

d

A standing wave occurs because of a combination of: a. incidence and reflection. b. refraction and diffraction. c. refraction and interference. d. constructive and destructive interference.

d

Definition: situation in which crests of one wave overlap crests of another wave Terms a. diffraction b. wave interaction c. reflection d. constructive interference e. refraction f. destructive interference g. wave interference

d

You can hear sounds around the corner of a building because of wave __________.

diffraction

Definition: change in direction of waves as they enter a new medium at an angle Terms a. diffraction b. wave interaction c. reflection d. constructive interference e. refraction f. destructive interference g. wave interference

e

Definition: situation in which crests of one wave overlap troughs of another wave Terms a. diffraction b. wave interaction c. reflection d. constructive interference e. refraction f. destructive interference g. wave interference

f

All reflected waves appear to be standing still. - True or False

false

Interference occurs only when the crests of one wave overlap with the troughs of another wave. - True or False

false

Reflection occurs only with sound waves. - True or False

false

The angle of incidence is always greater than the angle of reflection. - True or False

false

Wave interference always changes the speed of a wave. - True or False

false

Wave interference occurs only when a wave is reflected. - True or False

false

Wave interference occurs whenever waves enter a new medium - True or False

false

Definition: any interaction of waves with other waves Terms a. diffraction b. wave interaction c. reflection d. constructive interference e. refraction f. destructive interference g. wave interference

g

The angle with which waves strike a barrier is called the angle of __________.

incidence

We can see objects because they __________ waves of light.

reflect

An echo is an example of wave __________.

reflection

A straight straw in a glass of water appears to be bent because of wave __________.

refraction

What factors determine how greatly a wave is diffracted?

the size of the obstacle or opening in the obstacle and the wavelength of the wave

A standing wave occurs when a wave is reflected straight back from an obstacle. - True or False

true

Diffraction is more pronounced with sound waves than light waves. - True or False

true

Light waves refract when they pass from air to water. - True or False

true

How much a wave is diffracted depends on the length of the obstacle and the __________ of the wave.

wavelength

When does diffraction occur?

when waves reach an obstacle they cannot pass through or when they pass through an opening in a barrier