Front

What is a repeating sound caused by sound waves bouncing off a surface?

Back

echo

Front

What is the term for a back and forth movement?

Back

vibration

Front

What do we call light that is taken in and not reflected or transmitted?

Back

absorbed

Front

What is the process called when light changes direction after bouncing off a shiny, smooth surface?

Back

reflection

Front

True or False: Sound travels faster through solids than air and water.

Back

True

Front

What is the speed of sound in air at room temperature?

Back

Approximately 343 meters per second (m/s).

Front

What is the phenomenon called when sound waves spread out after passing through a narrow opening?

Back

diffraction

Front

What is the term for the highest point of a wave?

Back

crest

Front

What is the term for the lowest point of a wave?

Back

trough

Front

What is the relationship between frequency and pitch in sound?

Back

Higher frequency corresponds to a higher pitch.