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MECHANICAL WAVES PART 1
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• Slide 1
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MECHANICAL WAVES PART 1

MISS HUSNA

• Question 2
30 seconds
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Q.

Before start the lesson, pls update your current emotion right now

Happy

Sleepy

• Slide 3
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DEFINITION

A disturbance that transfers energy through matter or space.

mechanical waves need medium to help it travel or propagate.

• Slide 4
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Play the video to learn the concept of mechanical waves through animation

Subtitle
• Slide 5
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• Question 6
60 seconds
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Q.

1. What is a mechanical wave?

A wave that is a vibration in matter, transferring energy through a material.

Any kind of wave that has peaks and troughs

Any oscillation that transfers energy.

A wave that is created by a machine

• Slide 7
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click the play button to watch the next video

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• Slide 8
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• Question 9
30 seconds
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Q.

2. The maximum distance that the particles of a wave’s medium vibrate from their rest position

frequency

wavelength

wave speed

amplitude

• Question 10
30 seconds
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Q.

3. Which of the following terms describes the number of waves that pass by each second?

frequency

Wavelength

peak

trough

• Question 11
45 seconds
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Q.

4. When the frequency of a wave increases, what happens to the wavelength?

The wavelength is not directly affected by the frequency of a wave.

The wavelength increases.

The wavelength decreases

More specific information is needed to form a conclusion about the wavelength.

• Slide 12
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click the play button to watch the next video

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• Slide 13
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• Question 14
45 seconds
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Q.

5. A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling

surface wave

tranverse wave

electromagnetic wave

longitudinal wave

• Question 15
30 seconds
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6. A wave in which the particles of the medium vibrate parallel to the direction of the wave motion

mechanical wave

surface wave

longitudinal wave

wave

• Question 16
45 seconds
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7. Which of the following is NOT a characteristic of mechanical waves?

They consist of disturbances or oscillations of a medium.

They transport energy.

They travel in a direction that is at right angles to the direction of the particles of

the medium.

They are created by a vibrating source.

• Question 17
30 seconds
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Q.

8. What property of this wave is represented by the letter "A"

Amplitude

Crest

Trough

Wavelength

• Question 18
30 seconds
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Q.

9. What property of this wave is represented by the letter "B"

Amplitude

Crest

Trough

Wavelength

• Question 19
30 seconds
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Q.

10. The number of wavelengths that pass a point each per second is:

frequency

period

longitudinal

tranverse wave

• Slide 20
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New term in this chapter

WAVE NUMBER

• Slide 21
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Wave Number,k

number of complete wave cycles of a wave that exist in one meter (1m) of linear space.

unit is m-1

• Slide 22
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Our Next Lesson

• Interpret Equation for Progressive Wave

• Use equation for progressive wave

• Slide 23
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Thank you

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