13.1 Types of Waves
What kind of waves are sound waves?
- Mechanical waves
- Electromagnetic waves
What kind of a wave does a tuning fork create?
- Pulse wave
- Periodic wave
- Electromagnetic wave
What kind of waves are electromagnetic waves?
- Longitudinal waves
- Transverse waves
- Mechanical waves
With reference to waves, what is a disturbance?
- It refers to the resistance produced by some particles of a material.
- It refers to an oscillation produced by some energy that creates a wave.
- It refers to the wavelength of the wave.
- It refers to the speed of the wave.
13.2 Wave Properties: Speed, Amplitude, Frequency, and Period
Which of these is not a characteristic of a wave?
If you are in a boat at a resting position, how much will your height change when you are hit by the peak of a wave with a height of 2 m?
- 0 m
- 1 m
- 2 m
- 4 m
What is the period of a wave with a frequency of 0.5 Hz?
- 0.5 s
- 1 s
- 2 s
- 3 s
The amplitude of a wave is independent of its speed.
The amplitude of a wave is directly proportional to its speed.
The amplitude of a wave is directly proportional to the square of the inverse of its speed.
The amplitude of a wave is directly proportional to the inverse of its speed.
The speed of seismic waves depends on the size of the medium.
The speed of seismic waves depends on the shape of the medium.
The speed of seismic waves depends on the rigidity of the medium.
13.3 Wave Interaction: Superposition and Interference
What is added together when two waves superimpose?
Pure constructive interference occurs between two waves when they have the same _____.
- frequency and are in phase
- frequency and are out of phase
- amplitude and are in phase
- amplitude and are out of phase
What kind(s) of interference can occur between two identical waves moving in opposite directions?
- Constructive interference only
- Destructive interference only
- Both constructive and destructive interference
- Neither constructive nor destructive interference
What term refers to the bending of light at the junction of two media?
Which parameter of a wave gets affected after superposition?
When do the amplitudes of two waves get added?
- When their amplitudes are the same
- When their amplitudes are different
- When they propagate in perpendicular directions
- When they are propagating along the same line in opposite directions