MISA Waves and Electromagnetic Radiation 2

Question 1

What does the amplitude of a wave represent?

Accepted Answer

The maximum displacement of the medium from its resting position

Answer

The number of wave cycles per second

Answer

The distance between two consecutive crests

Answer

The speed at which the wave travels

Question 2

What is refraction?

Accepted Answer

The bending of a wave as it passes from one medium into another

Answer

The bouncing of a wave off a surface

Answer

The spreading of a wave around an obstacle

Answer

The combination of two waves to form a new wave

Question 3

A wave completes 50 cycles in one second. What is its frequency?

Accepted Answer

50 hertz

Answer

50 meters

Answer

0.02 seconds

Answer

50 meters per second

Question 4

Which part of the electromagnetic spectrum is used in microwave ovens to heat food?

Accepted Answer

Microwaves

Answer

Infrared radiation

Answer

Radio waves

Answer

Ultraviolet radiation

Question 5

What phenomenon explains why the sky appears blue on a clear day?

Accepted Answer

Scattering of shorter-wavelength blue light by atmospheric gas molecules

Answer

Refraction of sunlight by atmospheric water vapor

Answer

Reflection of ocean light off clouds

Answer

Absorption of red light by ozone in the stratosphere

Question 6

When two waves overlap and their crests align, the result is called:

Accepted Answer

Constructive interference

Answer

Destructive interference

Answer

Refraction

Answer

Diffraction

Question 7

How do radio waves and visible light differ?

Accepted Answer

Radio waves have much longer wavelengths and lower frequencies than visible light

Answer

Radio waves require a medium to travel; visible light does not

Answer

Radio waves travel faster than visible light in a vacuum

Answer

Radio waves carry more energy per photon than visible light