WCAS Waves and Their Applications 3

Question 1

What phenomenon occurs when two waves meet at the same point and their effects combine?

Accepted Answer

Interference

Answer

Reflection

Answer

Refraction

Answer

Diffraction

Question 2

When a light wave bends as it passes from air into a glass lens, this is called:

Accepted Answer

Refraction

Answer

Reflection

Answer

Diffraction

Answer

Absorption

Question 3

Which wave behavior allows waves to bend around the edges of obstacles or openings?

Accepted Answer

Diffraction

Answer

Reflection

Answer

Refraction

Answer

Absorption

Question 4

The Doppler effect describes which phenomenon?

Accepted Answer

A change in the observed frequency of a wave when the source or observer is moving

Answer

Waves losing energy as they travel farther from the source

Answer

The bending of waves as they pass through different media

Answer

The reflection of waves off smooth surfaces

Question 5

According to the law of reflection, when a light ray bounces off a flat mirror, the angle of incidence equals:

Accepted Answer

The angle of reflection

Answer

90 degrees always

Answer

The angle of refraction

Answer

45 degrees always

Question 6

Which type of wave is characterized by alternating compressions (areas of high pressure) and rarefactions (areas of low pressure)?

Accepted Answer

Longitudinal wave

Answer

Transverse wave

Answer

Surface wave

Answer

Electromagnetic wave

Question 7

How does increasing the frequency of electromagnetic radiation affect the energy carried by each photon?

Accepted Answer

Energy increases as frequency increases

Answer

Energy decreases as frequency increases

Answer

Energy remains the same regardless of frequency

Answer

Energy becomes zero at very high frequencies