Waves

A train whistle is at a higher pitch (note) as it approaches you and then drops to a lower pitch as it moves away. This effect is called ______________

• the Eiffel effect

• the Doppler effect.

• the genesis effect

• the electromagnetic spectrum

Tags

NGSS.HS-PS4-1

You can hear the band playing in Mr. Paces' room down in the commons area. This is because the sound waves are transmitted around the edge of the door and spread out down the hallway. This is due to sound wave _____________

• absorption

• diffraction

• interference

• reflection

Tags

NGSS.MS-PS4-2

Refraction or the bending of waves takes place when a light wave changes _____________

• color

• intensity

• speed

• frequency

Tags

NGSS.HS-PS4-1

If a piece of paper reflects the wavelengths of red-orange-yellow-green-blue-indigo-violet light, what color will the paper appear to human eyes?

• black

• brown

• white

• blue

Tags

NGSS.MS-PS4-2

Sound waves must have a __________ in which to travel, but electromagnetic waves can travel anywhere.

Tags

NGSS.MS-PS4-2

Volume or intensity of a sound wave is measured by the size of the _________ and reported in decibels.

• wavelength

• trough

• amplitude

• frequency

Tags

NGSS.MS-PS4-1

According to Doppler's Law or Doppler's Effect....

• The loudness of a moving source of sound is independent of the observer.

• The frequency of a moving source of sound is independent of the observer.

• The loudness of a moving source of sound is greater as it approaches an observer.

• The frequency of a moving source of sound is greater as it approaches an observer.

When light passes from air into water, the light waves bend, or ___________.

• diffract

• refract

• reflect

• transfer

Tags

NGSS.MS-PS4-2

Which of these are NOT mechanical waves and can be used to send a signal to satellites orbiting the earth?

• sound waves

• radio waves

• both sound waves and radio waves

• neither sound waves or radio waves

Tags

NGSS.MS-PS4-3

Sound waves travel fastest through __________

• gas

• solid

• liquid

• vacuum

Tags

NGSS.MS-PS4-2