Y9 KS3 6.2 Soundwaves inteference

Which one of these will always result in a louder sound being heard?

• two sound waves cancel

• two sound waves reinforce

• two sound waves reflect

• two sound waves refract

Which one of these will always result in no sound being heard?

• two sound waves cancel

• two sound waves reinforce

• two sound wave reflect

• two sound waves refract

Describe using the words peak and/or trough to describe how two sound waves must meet in order to reinforce.

___________ to ___________

Describe how two sound waves must meet in order to cancel. (use the words peak and/or trough)

What is the frequency in Hz of the wave after reinforcing? Your answer does not need to include the unit.

Tags

NGSS.MS-PS4-1

What is the ampltiude in mm of the wave after reinforcing? Your answer does not need to include the unit.

Tags

NGSS.MS-PS4-1

Two sound waves have frequencies of 600Hz. The amplitude of one the waves is 0.25mm.

What is the amplitude of the other wave required for the two waves to cancel. You must include units.

Two sound waves have frequencies of 600Hz. The amplitude of one the waves is 0.25mm.

What is the amplitude after the waves cancel?

Draw how two waves look with noise cancelling headphones.

Tags

NGSS.HS-PS4-5

Draw how two waves will look with two loud speakers amplifying the sound.

Tags

NGSS.MS-PS4-1