Fall Semester Review #3

How high or low a sound seems to be is called what?

• Pitch

• Loudness

• Doppler Effect

• Intensity

The speed of sound at ground level is approximately 761 mph. If you are moving at 770 mph and 3 feet behind you an avalanche happens, do you hear the sound?

• Yes, the sound reaches us with an extreme doppler shift

• Yes, the sound reaches us

• No the sound is not moving fast enough to catch us

• No we are deaf

In which does sound move the fastest?

• solids

• a vacuum

• liquids

• gases

The beam sticking a mirror is called the __________.

• Incident Beam

• Reflected beam

• angle of reflection

• Angle of incidence

The beam that bounces off the mirror is called what?

• Incident Beam

• Reflected Beam

• Angle of Reflection

• Angle of Incidence

The angle formed by the reflected beam and the normal is the_______

• Incident Beam

• Reflected beam

• angle of reflection

• Angle of incidence

The angle formed by the incident beam and the normal is the________.

• Incident Beam

• Reflected beam

• angle of reflection

• Angle of incidence

________ is the distance between one point on a wave and the nearest point just like it.

• Compression

• Rarefaction

• Wavelength

• Period

• Amplitude

What is the speed of a wave with a frequency of 50 Hz and a wavelength of 10m?

• 5 m/s

• 50 m/s

• 500 m/s

• 5000 m/s

A ______ is a material through which a wave transfers energy.

• trough

• frequency

• substrate

• medium