W4 Wave Interference Review

What is wave interference?

• The process of two waves meeting and forming a new wave

• The reflection of a wave off a surface

• The absorption of a wave by a medium

• The transmission of a wave through a medium

Tags

NGSS.HS-PS4-1

What is constructive interference?

• When two waves cancel each other out

• When two waves create a greater amplitude

• When two waves reflect off each other

• When two waves pass through each other without interaction

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What condition must be met for constructive interference to occur?

• The waves must have different wavelengths

• The waves must be out of phase

• The waves must have the same wavelength and be in phase

• The waves must be traveling in opposite directions

Tags

NGSS.HS-PS4-1

What is destructive interference?

• When two waves create a greater amplitude

• When two waves pass through each other without interaction

• When two waves create a smaller amplitude or cancel out

• When two waves reflect off each other

Tags

NGSS.HS-PS4-1

What happens to the wave pulses after they interfere and continue traveling?

• They stop moving

• They change direction

• They resume their original amplitude

• They increase in amplitude permanently

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What is the result when two light waves constructively interfere?

• The amplitude decreases

• The amplitude remains the same

• The amplitude increases

• The light becomes invisible

What happens to the amplitude of sound waves when they destructively interfere?

• The amplitude increases

• The amplitude decreases

• The amplitude remains unchanged

• The sound becomes louder

What is the significance of interference patterns in sound waves?

• They make sound waves visible

• They determine the pitch of sound

• They affect the volume of sound

• They change the speed of sound

Tags

NGSS.HS-PS4-1

Two speakers are producing the following interference pattern.

Using the pressure graph, infer the volume of the two locations (light magnifying glass and dark magnifying glass)

• Light: quieter
  Dark: louder

• Light: louder
  Dark: quieter

• Equal volumes

Tags

NGSS.HS-PS4-1

How is it possible for 2 working speakers that are close together to produce sound waves but you would hear almost no sound?

• The sound waves from one speaker would cancel out the sound waves from the other speaker

• The speakers are turned off.
• The sound waves are too low in frequency.
• The speakers are too far apart to hear anything.