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