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Sound Propagation: Medium and Speed

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Questions and Answers

What does a 3-second gap between the flash of lightning and the sound of thunder indicate?

The storm is about a kilometer away (correct)

The storm has already passed

The storm is directly overhead

The storm is far away

Which of the following materials has the fastest speed of sound?

All have the same speed of sound

Air (dry) at 0°C

Concrete (correct)

Water at 0°C

What is the speed of sound in water at 0°C?

330m/s

5000m/s

1400m/s (correct)

1500m/s

Is the speed of sound dependent on the pressure of the air?

Depends upon the pressure of the air (B) Signup and view all the answers

Do sound particles need a medium to travel?

Yes, particles are needed for sound to travel (A) Signup and view all the answers

Which material has the slowest speed of sound?

Air (dry) at 0°C (B) Signup and view all the answers

In which direction do the oscillations occur in longitudinal waves?

Backwards and forwards (C) Signup and view all the answers

What are the different sections known as in longitudinal waves?

Compressions and rarefactions (C) Signup and view all the answers

What type of waves are sound waves?

Mechanical waves (D) Signup and view all the answers

Which of the following materials can sound waves travel through?

Solid, liquid, and gas (C) Signup and view all the answers

What is the speed of sound in air?

$330$ m/s (B) Signup and view all the answers

If there is a 3-second gap between a flash of lightning and the sound of thunder, how far away is the storm?

1 kilometer (D) Signup and view all the answers

Based on the text, what is the conclusion about sound traveling through space?

Sound cannot travel through space because there are no particles. (C) Signup and view all the answers

In which medium does sound generally travel the fastest?

Solid (A) Signup and view all the answers

Why does sound travel faster through a solid than a gas?

Solids have particles that are more densely packed. (A) Signup and view all the answers

What is an echo according to the text?

A reflected sound wave (D) Signup and view all the answers

How is an echo useful for navigation, according to the text?

To measure the depth of water (C) Signup and view all the answers

If the speed of sound in air is 330 m/s, how long would it take for a sound wave to travel 660 meters?

$2$ seconds (D) Signup and view all the answers