Waves in KS3

What are the two main types of waves?

• sound waves and light waves

• transverse waves and longitudinal waves

• radio waves and gamma rays

• mechanical waves and electromagnetic waves

Define the term 'amplitude' in relation to waves.

• The frequency of a wave

• The wavelength of a wave

• Maximum displacement or distance a wave varies from its rest position.

• The speed of a wave

Explain the difference between transverse and longitudinal waves.

• Transverse waves do not transfer energy

• Longitudinal waves oscillate perpendicular to the direction of energy transfer

• Transverse waves oscillate parallel to the direction of energy transfer

• Transverse waves oscillate perpendicular to the direction of energy transfer, while longitudinal waves oscillate parallel to the direction of energy transfer.

What is the wavelength of a wave?

• The wavelength of a wave is the speed of the wave.

• The wavelength of a wave is the frequency of the wave.

• The wavelength of a wave is the amplitude of the wave.

• The wavelength of a wave is the distance between two consecutive points in the wave that are in phase with each other.

How does the frequency of a wave affect its pitch?

• Frequency of a wave has no impact on its pitch.

• Higher frequency results in lower pitch.

• Frequency of a wave directly affects its pitch.

• Pitch remains constant regardless of wave frequency.

Describe what happens to a wave when it undergoes reflection.

• The wave disappears completely.

• The wave splits into multiple smaller waves.

• The wave speeds up significantly.

• The wave bounces off a surface and changes direction.

What is refraction in the context of waves?

• The absorption of waves by a medium

• The amplification of waves as they travel through a medium

• The reflection of waves off a surface

• The bending of waves as they pass from one medium to another due to a change in their speed.

How does the speed of a wave change when it moves from one medium to another?

• The speed of a wave always increases when moving to a new medium.

• The speed of a wave remains constant regardless of the new medium.

• The speed of a wave can increase, decrease, or remain the same depending on the properties of the new medium.

• The speed of a wave decreases only if the new medium is denser.

What is the principle of superposition when it comes to wave behavior?

• The principle of superposition in wave behavior is the idea that waves can combine and overlap without being destroyed, and the resulting wave is the sum of the individual waves.

• Superposition in wave behavior means that waves can only exist in isolation.

• The principle of superposition states that waves cancel each other out when they overlap.

• The principle of superposition suggests that waves change their frequency when they combine.

Explain how interference can occur between two waves.

• Interference occurs when waves travel in opposite directions

• Interference is caused by the absence of waves

• Interference happens when waves have different frequencies

• When two waves overlap in space and time, interference can occur resulting in either constructive or destructive interference.