Speed of Sound and Light

A teacher bangs two bits of wood together. She hears an echo from a wall 0.14 seconds later. The wall is 25m away. What is the rough speed of sound, ACCORDING TO THESE RESULTS?

• Roughly 340 m/s

• Roughly 360 m/s

• Roughly 375 m/s

• Roughly 330 m/s

Tags

NGSS.MS-PS4-2

Roughly what is the speed of sound in air?

• The speed of light.

• About 10 m/s

• About 340 m/s

• About 1 500 m/s

Roughly what is the speed of sound in air?

• About 350 m/s

• About 1 500 m/s

• About 5000 m/s

• About 1800 m/s

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Roughly what is the speed of sound in water?

• About 350 m/s

• About 1 500 m/s

• About 5000 m/s

• About 1800 m/s

The diagram shows a person observing a thunderstorm located several kilometers away. The person hears the thunder several seconds after seeing the lightning. Which statement accurately explains the difference in observations of sound and light by the observer?

 

• Human eyes see light faster than their ears can hear sound.

• The medium the waves are traveling through is different for each type of wave.

• Light waves travel faster than sound waves.

• Sound waves travel faster than light waves.

What happens to the speed of sound when it moves from air to steel?

• It decreases significantly.

• It increases significantly.

• It remains unchanged.

• It becomes zero.

Tags

NGSS.MS-PS4-2

Sound travels at different speeds through different mediums.  Through which medium would your voice travel the fastest?

• Air on a cold winter morning

• Air on a hot summer afternoon

• A metal wall

• A pool

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The Speed of Light is ______ million meters per second.

• 300

• 1

• 100

What effect does temperature have on the speed of sound?

• Sound travels faster in colder temperatures.

• Sound travels slower in colder temperatures.

• Temperature has no effect on the speed of sound.

• Sound speed is only affected by humidity.

Tags

NGSS.MS-PS1-4

Roughly what is the speed of sound in glass?

• About 50 m/s

• About 1 500 m/s

• About 4 500 m/s

• About 1800 m/s

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2