Physical Science Quizizz

A wave machine generated waves with a wavelength of 0.80 m at a constant wave speed of 17 m/s.

212 Hz

The unit for measuring frequency is the ---

Hertz

A reflected sound wave

echo

What is transported by a wave?

energy

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 sounds wave's

frequency

The number of wavelengths that pass a point each second

frequency

The pitch of a sound is most closely related to the

frequency of the sound waves

In general, sound waves travel the slowest in _______

gas

The speed of sound in air is 340 m/s. The frequency of the sound waves generated by my voice is 720 Hz. Calculate the wavelength of sound of my voice.

0.472 m

A sound wave has a wavelength of 200 m and a frequency of 6 Hz. What is its speed?

1200 m/s

Cletus wants to make ear protectors for people who work around jet engines at Hartsfield Airport in Atlanta. What material should he experiment with for the best result?

A material that absorbs sound

How loud or soft a sound is, related to the _____ of the wave

amplitude

Frequency is defined as...

Number of waves or cycles generated per second.

Which of the following would you hear as a low pitched sound?: a. sound wave with a frequency of 50 Hz b. sound wave with frequency of 10,000 Hz c. sound wave with an intensity of 10 dB d. sound wave with an intensity of 100 dB

a. sound wave with a frequency of 50 Hz

Areas of increased pressure on a sound wave are known as a _______

compression

Bending of waves around an object (such as through a doorway)

diffract

Sound waves are...

longitudinal waves

You and a friend inspect an empty hallway in main building. You walk through the rooms talking to one another, and you notice that your voices and footsteps are echoing in the big, empty classes. What causes the echo?

sound waves reflecting off smooth, flat surfaces throughout the building

The distance from the beginning of one compression to the next compression is called a _____

wavelength