Sound Waves and Light Waves

When I speak in a high-pitch voice, the sound waves have

• high amplitude

• low amplitude

• high frequency

• low frequency

Tags

NGSS.MS-PS4-1

When I speak with low energy, the sound waves have

• low frequency

• low amplitude

• short wavelength

• high amplitude

Tags

NGSS.MS-PS4-1

Waves with a low frequency must have

• low amplitude

• long wavelength

• short wavelength

• low energy

Tags

NGSS.HS-PS4-1

To decrease the amplitude, I should

• draw shorter waves

• draw "smaller" waves

• draw less waves

• draw waves with a longer wavelength

Tags

NGSS.MS-PS4-1

Josh observed a bolt of lightning during a thunderstorm.  It took more than 15 seconds for Josh to hear the sound of thunder.  Why did Josh see the lightning strike before he heard the thunder? 

• Thunder always takes 15 seconds to travel through the air after lighting strikes. 

• Light waves from the lightning and sound waves from the thunder moved through different mediums.  

• Light waves are electromagnetic waves that travel much faster than mechanical waves, such as the sound wave he heard as thunder. 

• The conditions in the air at the time allowed light waves to move faster than the sound waves he hears as thunder. 

   

Why can't sound travel in space?

• Sound is a mechanical wave, because of this it cannot travel in a vacuum.

• Sound is a mechanical wave, because of this it cannot travel in a medium.

• Sound is a electromagnetic wave, because of this it cannot travel in a vacuum.

• Sound is a electromagnetic wave, because of this it cannot travel in a medium.

Answer explanation

The distance from the sun to Earth is called an AU. All objects in our solar system are within 140 AU of the sun.

Tags

(SC.8.E.5.1) Vastness of Space

Changing the amplitude of a sound wave affects the...

• Volume

• Frequency

• Pitch

• Wavelength

Tags

NGSS.MS-PS4-1

What controls the volume of a sound wave?

• amplitude

• wavelength

• frequency

Tags

NGSS.MS-PS4-1

True or False: Sound waves are faster than light.

• False

• True

The amount of waves per second is called the _______.

• Wavelength

• Wave

• Pitch

• Frequency