Core Physics-Wave properties

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  • Created by: DJSalt
  • Created on: 22-04-17 20:25
Describe the properties of transverse waves and give examples
Particles vibrate at 90 degrees to the direction of energy flow. Different examples: Light, EM waves, Water Waves, S-Waves. Idea is that as energy travels forward, the particles are disturbed at 90 degrees to direction of energy flow(at right angles)
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Describe the properties of lognitudinal waves and give examples
Particles vibrate in the same direction as energy flow. For example: Sound, Ultrasound, Infrasound, P-Waves. As the energy travels forward particles move backwards and forwards, disturbed back and forth.
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Describe how a transverse wave moves in relation to a slinky
As wave moves forward, slinky coils move up and down
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Describe how a longitudinal wave moves in relation to a slinky
As wave moves forward, slinky coils move back and forth
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What do we use to get pictures of waves and what are they generally used to detect?
Oscilloscope and they are generally used to detect sound waves
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What is the wavelength?
It's the distance from peak to peak
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What is the symbol for wavelength?
An upside down "y" shape
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What is the peak?
The highest point of a wave
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What is amplitude?
The energy the wave carries, half way point to the peak of the wave.
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What is the frequency?
The number of waves per second (1Hz = one wave per second)
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How fast does light travel approximately in a vacuum(space)
300,000,000(m/s)
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True or false: Sound needs particles to conduct itself
True
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Is there sound in space?
No as it's a vacuum meaning there're no particles and sound needs particles to conduct itself
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What's the speed of sound in air?
330(m/s)
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What are the two rules of standard form?
1:The number it's being multiplied by must be between 1& 10. 2: Multiplied by 10 the power of 'X'
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What do we use standard form for if it's to a positive power?
If things have an astronomically large scale
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What do we use standard form for if it's to a negative power
If things have an extremely small scale
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What's 1,000,000 in standard form?
1X10^6 (^ means to the power of)
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What's 0.005 in standard form?
5X10^-3
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What's 0.00034 in standard form?
3.4X10^-4
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What do you when multiplying numbers with standard form?
You add the standard form values.
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Work out 3 X 10^8 X 4 X 10^3
1: Multiply the whole numbers first; 3 X 4 = 12. Step 2: Add the powers; 8 + 3 = 11. Step 3: Combine answers. 12 is higher than 10 so we have to divide it by 10 which gives us 1.2. Due to this we must add one more to the power. 1.2X10^13
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Work out 4 X 10^3 / 8 X 10^8
When we divide numbers we must subtract the powers. Step 1: Divide the whole nubmbers 4/8=0.5. Step 2: Subtract the powers 3-8=5. Step 3: Combine answers. As 0.5 is lower than 1 you times it by 10 to get 1.5. Due to this you take away 1 power 5/10^-6
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A wave travels at 3 X 10^8(m/s) and has a wavelength of 6 X 10^-5(m). Calculate its frequency
Frequency = 5X10^12 = We must divide as frequency=wave speed divided by wavelength. 3X10^8/6X10^-5. 3/6=0.5. 8- -5=13. 0.5X10^13. 0.5X10=5.
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Other cards in this set

Card 2

Front

Describe the properties of lognitudinal waves and give examples

Back

Particles vibrate in the same direction as energy flow. For example: Sound, Ultrasound, Infrasound, P-Waves. As the energy travels forward particles move backwards and forwards, disturbed back and forth.

Card 3

Front

Describe how a transverse wave moves in relation to a slinky

Back

Preview of the front of card 3

Card 4

Front

Describe how a longitudinal wave moves in relation to a slinky

Back

Preview of the front of card 4

Card 5

Front

What do we use to get pictures of waves and what are they generally used to detect?

Back

Preview of the front of card 5
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