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Physics - Waves
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Physics
Edexcel
GCSE
Physics
Combined Science
Waves
10th
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22 Terms
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1
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What is the wave speed equation?
wave speed = frequency x wavelength
2
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What direction do transverse waves vibrate?
Sideways/perpendicular.
3
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What direction do longitudinal waves vibrate?
Parallel.
4
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How do you work out wave speed using distance and time?
wave speed = distance/time
5
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What can happen when a wave meets a boundary?
Absorbed
Transmitted
Reflected
6
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What is refraction?
Waves changing direction at a boundary.
7
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What is the normal?
Imaginary line that is perpendicular to the point where the incoming hits the boundary.
8
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What is the electromagnetic spectrum?
Radio waves.
Micro waves.
Infrared.
Visible light.
Ultraviolet.
X-ray waves.
Gamma rays.
9
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True or False.
Gamma rays can cause and cure cancer.
True.
10
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What are 2 uses of x-rays?
Detect broken bones
Detect metal objects in the body
11
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What is a danger of x-rays?
Cancer.
12
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What are 2 uses of ultraviolet?
Detect forged bank notes
Destroying bacteria
13
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What is a danger of ultraviolet rays?
Sunburn
14
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What are 2 uses of visible light?
Seeing
Photography
15
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What is a danger of visible light?
Damage to retina cells.
16
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What are 2 uses of infrared?
Remote control
CookingW
17
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What are dangers of infrared?
Burns
Low blood pressure
18
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What are 2 uses of micro waves?
Cooking
Satellite signalsw
19
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What is a danger of micro waves?
Burns
20
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What is a use of radiowaves?
Communication
21
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Are there any dangers of radiowaves?
No
22
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What are electromagnetic waves made up of?
Oscillating charges.