Sound, Light, and Waves

Sound waves move faster than light waves.

• True
• False

What means number of waves per second?

• wavelength
• reflection
• diffraction
• frequency

Which of the following waves is a light wave?

• mechanical
• longitudinal
• infrared
• seismic

Which waves have the greatest amount of energy?

• gamma waves
• radio waves
• x-rays
• infrared light

The bouncing back of a light ray after hitting a surface is known as...

• diffraction
• refraction
• rebounding
• reflection

The bending of light is called refraction.

• True
• False

Higher frequency sound waves result in a lower pitch while a lower frequency waves result in a higher pitch.

• True
• False

What causes a yellow fire hydrant to appear yellow?

• It absorbs yellow light
• It reflects yellow light
• It transmits yellow light
• It reflects all colors except yellow

The _________ of a wave is simply the length of one complete wave cycle.

• amplitude
• wavelength
• trough
• crest

The further right you go on the light wave spectrum, the more harmful the waves become.

• True
• False