Physical Science B Unit 3 Lessons 3 and 4

_________________occurs when a wave bounces off a surface that it cannot pass through.

• refraction

• reflection

• interference

• doppler effect

When a wave is reflected what will change about the wave?

• increase speed

• decrease speed

• increase frequency

• flipped upside down

________________is the bending of a wave as it enters a new medium at an angle.

• refraction

• reflection

• interference

• Doppler effect

What will change about the wave once it is refracted? (Choose 2)

• direction

• speed

• amplitude

• wavelength

_________________is the bending of a wave as it moves around an obstacle or passes through a narrow opening.

• interference

• reflection

• refraction

• diffraction

True or False - The amount of diffraction increases when wavelength decreases.

• True

• False

_____________________occurs when two or more waves overlap and combine together.

• reflection

• refraction

• interference

• diffraction

The two waves above will combine by ______________ interference.

• constructive

• destructive

The two waves above will combine by _____________ interference.

• constructive

• destructive

Constructive interference occurs when two or more waves combine to produce a wave with a _____________ amplitude.

• smaller

• larger