Y9 6.2 Interference in sound [revision]

What type of interference is represented in this diagram?

• Constructive

• Destructive

What type of interference is represented in the diagram?

• Constructive

• Destructive

What type of interference do noise cancelling headphones use?

• Constructive Interference

• Destructive Interference

Which type of interference occurs when sound waves produced by wind instruments become louder?

• Constructive

• Destructive

True or False? Two waves cannot exist in the same space or in the same medium at the same time.

• True

• False

When a compression interferes with another compression, what occurs?

• They counteract and the wave stops.

• They combine to create a larger compression.

• They combine to create a rarefaction.

• None of the above.

When a crest and a trough interfere, what occurs?

• They combine to create a higher amplitude wave.

• They counteract and the wave either lessens or stops completely.

• The wave changes into a longitudinal wave.

When 2 waves temporarily interfere with each other then resume their course of movement, which of the following is true?

• They take on and keep a new amplitude based on the result of the interference until the end of the movement.

• They are not affected by the interference and maintain their original amplitude throughout the movement.

• Both waves are always counteracted and cease to exist.

• They temporarily take on a new amplitude due to the interference but resume their original amplitude until the end of the movement.

The two blue and purple waves will undergo _________________ when they meet.

• Constructive interference

• Destructive interference

The image of the two waves depicts

• Constructive interference

• Destructive interference