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A disturbance that transfers energy from place to place.

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Presentation on theme: "A disturbance that transfers energy from place to place."— Presentation transcript:

1 A disturbance that transfers energy from place to place.
wave

2 Mechanical waves are created when a source of energy causes a medium to
vibrate

3 The highest part of a transverse wave.
Crest

4 Waves that move the particles of the medium parallel to the direction in which the wave is moving
longitudinal

5 The maximum distance that the particles of a medium move from the rest position
amplitude

6 The distance between two corresponding parts of a wave
wavelength

7 The speed of a wave is its wavelength multiplied by its
frequency

8 How does energy move through a medium?
The particles bump into each other, passing the energy along.

9 How are mechanical waves classified?
how they move

10 Frequency is measured in units called
Hertz

11 What kind of wave causes the particles in the medium to move to right angles to the direction the wave is moving? transverse

12 The ____________ of a mechanical wave is a direct measure of its energy.
Amplitude

13 What do waves transfer? Energy

14 Does this tell us the distance between the two waves?
No

15 How compressed or rarefied it is
What is the difference between longitudinal waves with different amplitudes? How compressed or rarefied it is

16 The _______________ of a wave tells us the number of waves that are produced in a certain amount of time. Frequency

17 What is the frequency if three waves pass a point every second?
3 Hz.

18 What part of a longitudinal wave is this?
Compression

19 Which has a shorter wavelength?

20 What kind of wave carries energy through empty space?
Electromagnetic

21 What is the “stuff” a wave travels through?
medium

22 Which has a larger amplitude?

23 What is an ocean wave’s medium?
Salt Water

24 How do longitudinal waves move?
Parallel to the direction of the wave

25 What part of a longitudinal wave is this?
Rarefaction

26 The particles in a medium ____________________ to pass the wave’s energy along.
Bump into each other

27 What is the medium for the sound waves that come from a musical instrument?
Air

28 TRUE or FALSE: Although mechanical waves travel through a medium, they do not carry the medium with them. True!

29 Which of these show ONE full wave?
One wave has one crest and one trough

30 What are the two types of waves?
Transverse Longitudinal

31 In a transverse wave, the matter in the wave moves _____________________.
perpendicular to the wave's direction

32 What is the speed of the wave below?
Wave speed = wavelength x frequency Wavelength – 3 inches Wave Speed = 24 inches/second Frequency – 8 Hz. (8 waves pass every second)

33 How do you find the wavelength of a longitudinal wave?
Measure from compression to compression or rarefaction to rarefaction.

34 Transverse waves create points called _________ and __________ or high and low points in the waves movement. Crest Trough

35 What part of a wave do these arrows show?
Amplitude Resting Position

36 What is an example of a longitudinal wave?
Sound

37 Which of these have a lower amplitude?

38 What is an example of a transverse wave?
the ocean

39 What is a vibration? Up and down/ back and forth motion

40 Can the medium a wave passes through affect the wave’s speed?
Yes!

41 What part of a wave are these arrows showing?
Wavelength

42 ____________ waves are waves that need a medium to travel through.
Mechanical

43 What is the frequency if six waves pass a point every three seconds?
2 Hz.

44 What part of a longitudinal wave is shown?

45 Parts where the coils in a longitudinal waves are spread out.
Rarefaction

46 Which has a higher frequency?

47 Parts where the coils in a longitudinal waves are close together.
Compression


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