Question

1. which of the following is not true about waves? (select all that apply)

___ sound waves travel through photons.
___ the amplitude of a wave is the measurement from trough to trough.
___ sound waves cause air particles to bump into each other.
___ seismic waves cause the ground to shake.
___ shiny objects reflect a lot of light.
___ dull objects reflect a lot of light.

Explanation:

1. Sound waves are mechanical waves that travel via particle vibrations, not photons (which carry electromagnetic waves like light).
2. Wave amplitude is the distance from the rest position to a crest or trough; the distance between two troughs is wavelength.
3. Dull objects absorb most light and reflect very little, unlike shiny objects which reflect most light.
4. The other statements are true: sound waves move via air particle collisions, seismic waves cause ground shaking, and shiny objects reflect large amounts of light.

Answer:

• Sound waves travel through photons.
• The amplitude of a wave is the measurement from trough to trough.
• Dull objects reflect a lot of light.