MECHANICAL WAVES PART 1

MECHANICAL WAVES PART 1

MISS HUSNA

Poll

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

• Happy

• Sleepy

DEFINITION

A disturbance that transfers energy through matter or space.

mechanical waves need medium to help it travel or propagate.

Play the video to learn the concept of mechanical waves through animation

Multiple Choice

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

click the play button to watch the next video

Multiple Choice

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

• frequency

• wavelength

• wave speed

• amplitude

Multiple Choice

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

• frequency

• Wavelength

• peak

• trough

Multiple Choice

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.

click the play button to watch the next video

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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.

Multiple Choice

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

• Amplitude

• Crest

• Trough

• Wavelength

Multiple Choice

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

• Amplitude

• Crest

• Trough

• Wavelength

Multiple Choice

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

• frequency

• period

• longitudinal

• tranverse wave

New term in this chapter

WAVE NUMBER

Wave Number,k

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

unit is m^-1

Our Next Lesson

• Interpret Equation for Progressive Wave

• Use equation for progressive wave

Thank you