Propagation of Sound

Write True if the statement is correct. Change the underlined word if not.

Sounds travel in transverse waves.

(a)  

It is the bouncing off of sound waves on some surfaces.

• Vibration

• Reflection

• Refraction

• Echolocation

It is the bending of sound waves because of their difference in speed.

• Vibration

• Reflection

• Refraction

• Echolocation

It is a system that some animals use in order to find food.

• Vibration

• Reflection

• Refraction

• Echolocation

It is the back and forth movement of the particles in a medium.

• Vibration

• Reflection

• Refraction

• Echolocation

Write True if the statement is correct. Change the underlined word if not.

In echolocation, the position of an object affects the time the sound wave will reflect to you.

(a)  

Which of the following can produce sound when wind or air is struck or applied?

• A Flute

• The Hanging Chimes

• A Light Bell

• A Heavy and Unmovable Box

These are sound waves with frequencies that are higher than 20000 Hz.

• Pitch

• Intensity

• Infrasonic Waves

• Ultrasonic Waves

It is corresponded as the highness or lowness of the sound.

• Pitch

• Intensity

• Infrasonic Waves

• Ultrasonic Waves

These are sound waves with frequencies that are lower than 20 Hz.

• Pitch

• Intensity

• Infrasonic Waves

• Ultrasonic Waves