Long Test in Physics (4th Quarter)

A disturbance that travels through a medium as a longitudinal wave

• sound
• wavelength
• pitch
• frequency

How high or low a sound is; depends on the frequency (greater frequency= higher pitch)

• pitch
• frequency
• sound
• medium

A wave in which the vibration is in the same direction as that in which the wave is traveling; sound waves

• longitudinal wave
• ocean wave
• transverse wave
• mechanical wave

The part of a longitudinal wave where the particles of the medium are close together.

• rarefaction
• compression
• crest
• trough

A part in a longitudinal wave where the particles are spread apart

• compression
• rarefaction
• crest
• trough

A disturbance that transfers energy from one place to another without transferring energy

• wave
• trough
• pitch
• sound

You and your father inspect an empty house with the hopes of buying it. You walk through the rooms talking to one another, and you notice that your voices and footsteps are echoing in the big, empty house. What causes the echo?

• sound waves reflecting off smooth, flat surfaces throughout the house
• sound waves moving around the large rooms
• sound waves moving slowly through air
• sound waves refracting around corners in the empty rooms

Cletus wants to make ear protectors for people who work around loud jet engines at Hartsfield Airport in Atlanta. Which of the following materials should he experiment with for the best results?

• a material that produces sound
• a material that absorbs sound
• a material that transmits sound
• a material that amplifies sound

As the fire truck approached Mary, the pitch of the siren got higher. Once the fire truck passed and moved away, the siren's pitch got lower. This change in pitch is because of a change in the sound wave's

• concussion. 
• amplitude. 
• reflection.
• frequency. 

After the train passed, the pitch of the train whistle became lower. This change in sound would be represented by what change in the diagram above? 

• The distance represented by C would increase. 
• The distance represented by C would decrease. 
• The distance represented by D would increase. 
• The distance represented by D would decrease.