Waves Review 1

What type of wave is sound?

• transverse

• longitudinal

• electromagnetic

What does the area pointed by the arrow in the diagram represent?

• compression

• rarefaction

• equilibrium

the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it des not go through

• reflection

• refraction

• diffraction

• resonance

the bending of a wave as the waves passes between two substances in which the speed of the wave differs.

• reflection

• refraction

• diffraction

• resonance

a change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening.

• reflection

• refraction

• diffraction

• interference

If you want to change the pitch of a sound, you have to change the ______

• frequency

• amplitude

• height

• volume

When the car moves AWAY from you, its horn seems...

• Low pitched
• High pitched
• Normal

When an ambulance move TOWARD you it sounds ________ pitched. 

• high
• low
• medium

The Doppler effect is seen when a wave-making source moves toward an observer. 

• True
• False

What is the Doppler Effect?

• A change in frequency due to the relative motion of a wave source and an observer

• When a wave overlaps with another wave

• When a wave bounces off of another object

• When a wave bends due to traveling through a different medium