P1.5 - The Uses of Waves Flashcards Preview

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Flashcards in P1.5 - The Uses of Waves Deck (25)
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1
Q

What so waves transfer?

A

Energy

2
Q

What 2 types of waves are there?

A

Transverse and longditudinal

3
Q

What are the oscillations in a transverse wave like?

A

Perpendicular to the direction of energy transfer

4
Q

What re the oscillations in a longitudinal wave like?

A

Parallel to the direction of energy transfer

5
Q

Are electromagnetic waves transverse or longitudinal?

A

Transverse

6
Q

Give an example of a longitudinal wave:

A

A sound wave

7
Q

How do electromagnetic waves behave in a vacuum?

A

They all travel at the same speed

8
Q

What do the speeds of electromagnetic waves vary from?

A

10^-15 to 10^4

9
Q

What is the order of the electromagnetic spectrum?

A

Radio, Micro, Infrared, Visible, UV, X-Ray, Gamma

10
Q

Which type of wave has the shortest wavelength?

A

Gamma

11
Q

Which type of wave has the lowest frequency?

A

Radio

12
Q

Which type of wave has the most energy?

A

Gamma

13
Q

Longitudinal waves show areas of…

A

…compression and rarefaction

14
Q

How can the direction/speed of waves change?

A

They can be reflected, refracted or diffracted

15
Q

What happens when a wave is refracted at an interface?

A

It changes direction

16
Q

What is frequency?

A

How many wavelengths pass a certain point every second?

17
Q

What is frequency measured in?

A

Hz (Hertz)

18
Q

What is wavelength?

A

The distance between two identical points on a wave (2 consecutive peaks/troughs)

19
Q

What is amplitude?

A

The distance between the equilibrium and the highest peak of a wave

20
Q

What is the wave equation?

A

v = f x λ (speed = frequency x wavelength)

21
Q

Which types of waves can be used for communication?

A

Radio, micro, infrared and visible light waves

22
Q

How can radio waves be used for communication?

A

Television, radio

23
Q

How can micro waves be used for communication?

A

mobile phones, satellite tv

24
Q

How can infrared waves be used for communication?

A

remote controls

25
Q

How can visible light waves be used for communication?

A

photography