14 Reflection of sound

Question 1

what do sound waves do?

Answer 1

Sound waves reflect or ‘bounce’ off surfaces

Question 2

what is a echo

Answer 2

Reflected sound is heard as an echo.

Question 3

what is reflected sound hear as

Answer 3

an echo

Question 4

ECHOLOCATION

Answer 4

allows sonar ships and some animals to determine the distance between them and other objects.

Question 5

what happens in echolocation

Answer 5

The animal emits a sound wave.
The sound wave is reflected off an object
The echo is detected a certain amount of time later. The longer the time, the further away the object is.

Question 6

draw diagram of echo location

Question 7

You can calculate how far a sound wave has travelled using the equation:

Answer 7

Distance = speed x time

Question 8

what is Distance = speed x time

Answer 8

You can calculate how far a sound wave has travelled using the equation:

Question 9

speed of sound in air

Answer 9

Air

330 m/s

Question 10

speed of sound in Seawater

Answer 10

Seawater

1500 m/s

Question 11

speed of sound in Solids

Answer 11

Solids

>4000 m/s