Physics 10th ICSE: Sounds [Semester 1] Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

How is sound produced?

A

Produced when a body vibrates and reaches us through vibrations of the particles of the surrounding medium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does sound require for propagation?

A

A medium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What range is the audible range of frequency?

A

20 Hz to 20,000 Hz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the sound of frequency above 20,000 Hz?

A

Ultrasonic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the sound of frequency below 20 Hz?

A

Infrasonic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Name 2 points of distinction between light and sound waves.

A

Light:

  1. electromagnetic waves
  2. Can travel in a vacuum

Sound:

  1. Mechanical Waves
  2. Requires material medium for propagation, ie. can’t travel in a vacuum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is an echo?

A

The sound heard after reflection from a distant obstacle after the original sound has ceased.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What effect takes place when there are repeated reflections at the reflecting surface, prolonging the sound?

A

Reverberation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

¯_( ͡° ͜ʖ ͡°)_/¯

A

insert correct answer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Name 2 uses of SONAR.

A

> Dolphins: to detect their enemies using ultrasonic waves

> Bats: uses infrasonic waves to avoid obstacles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does the term ‘SONAR’ stand for?

A

Sound Navigation And Ranging

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is imaging human organs called in the medical field?

A

Ultrasonography

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Define the term ‘Time Period (T)’.

A

Time taken by the particle in the medium to complete one vibration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is defined as the number of vibrations made by the particle of the medium in one second?

A

Frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Define the term ‘Amplitude’.

A

Maximum displacement of the particle of the medium on either side of its mean position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly