8th Grade Waves Review

What is the unit of measurement for frequency?

• Decibel (dB)

• Hertz (Hz)

• Newton (N)

• Joule (J)

What is diffraction in wave behavior?

• Diffraction is the bending of waves when they encounter a barrier.

• Diffraction is the spreading out of waves when they pass through an opening or around obstacles.

• Diffraction is the reflection of waves off a surface.

• Diffraction is the absorption of waves by a medium.

What is the definition of wavelength?

• Wavelength is the distance between two consecutive crests or troughs in a wave.

• Wavelength is the speed of a wave divided by its frequency.

• Wavelength is the amplitude of a wave measured from the equilibrium position.

• Wavelength is the time taken for one complete cycle of a wave.

What is the frequency of a wave?

• The speed of the wave in a medium.

• The distance between two consecutive waves.

• The number of waves that pass a given point in one second, measured in Hertz (Hz).

• The amplitude of the wave.

What is the difference between transverse and longitudinal waves?

• In transverse waves, particles move parallel to the direction of the wave, while in longitudinal waves, particles move perpendicular to the direction of the wave.

• In transverse waves, particles move in a circular motion, while in longitudinal waves, particles move in a straight line.

• In transverse waves, particles move perpendicular to the direction of the wave, while in longitudinal waves, particles move parallel to the direction of the wave.

• In transverse waves, particles do not move, while in longitudinal waves, particles move back and forth.

What is the formula to find the speed of a wave?

• Speed = Wavelength + Frequency

• Speed = Wavelength - Frequency

• Speed = Wavelength x Frequency

• Speed = Frequency / Wavelength

What does amplitude represent in a wave?

• The speed of the wave

• The maximum distance that points on a wave move from their rest position

• The frequency of the wave

• The wavelength of the wave

What is a compressional wave?

• A type of wave where particles move perpendicular to the direction of wave travel.

• A type of wave where particles move parallel to the direction of wave travel.

• A wave that only travels through solids and not through liquids or gases.

• A wave that does not require a medium to travel.

What is the relationship between speed, frequency, and wavelength?

• Speed = Frequency + Wavelength

• Speed = Frequency - Wavelength

• Speed = Frequency x Wavelength

• Speed = Wavelength / Frequency

How do you calculate the wavelength of a wave?

• Wavelength = Speed / Frequency

• Wavelength = Frequency / Speed

• Wavelength = Speed + Frequency

• Wavelength = Speed - Frequency