Properties of Sound

Question 1

Sound can be r…

Answer 1

…reflected and refracted

Question 2

Is sound a longitudinal or transverse wave?

Answer 2

Longitudinal

Question 3

What is the range of human hearing?

Answer 3

20Hz to 20,000Hz

Question 4

What is the speed of sound in air?

Answer 4

340m/s

Question 5

Does sound travel faster or slower in solids and liquids?

Answer 5

Faster

Question 6

Describe an experiment to measure the speed of sound in air:

Answer 6

Use equation:
Speed = Distance ÷ Time
2 students stand 200 m away from each other. They measure the distance by using a tape measure.
One student has a stopwatch.
Another has a pin and a balloon
The student with a stopwatch times the duration between seeing the other student pop the balloon and actually hearing it. Repeat it 3 or more times for accuracy

Speed of sound = 200 (m) ÷ x (s)

Question 7

WATCH THE VIDEO AND UNDERSTAND IT!

https://www.youtube.com/watch?v=QLHBcElp7e8&ab_channel=PhysicsOnline

Answer 7

NICE!

Question 8

The higher the frequency…

Answer 8

…the higher the pitch

Question 9

The big amplitude…

Answer 9

…the louder it is