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GCSE Physics > The EM Spectrum > Flashcards

The EM Spectrum Flashcards

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1
Q

What is the electromagnetic spectrum?

A

The range of all possible frequencies of radiation

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2
Q

What type of wave are electromagnetic waves?

A

Transverse

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3
Q

Can electromagnetic waves travel through a vacuum?

A

Yes, at the same speed as through the air

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4
Q

How do electromagnetic waves transfer energy?

A

As radiation from the source of a wave to an absorber

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5
Q

What is the order of the groups of the EM spectrum?

A
  • Radio waves
  • Microwaves
  • Infrared
  • Visible light
  • Ultraviolet
  • X-rays
  • Gamma rays
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6
Q

Which electromagnetic wave has the longest wavelength?

A

Radio waves

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7
Q

Which electromagnetic wave has the shortest wavelength?

A

Gamma rays

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8
Q

Which electromagnetic wave has the highest frequency?

A

Gamma rays

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9
Q

Which electromagnetic wave has the lowest frequency?

A

Radio waves

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10
Q

Which electromagnetic wave has the highest amount of energy?

A

Gamma rays

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11
Q

Which electromagnetic wave has the least amount of energy?

A

Radio waves

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12
Q

More hazardous EM waves have a higher ???

A

Frequency

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13
Q

What are the uses of radio waves?

A
  • Broadcasting TV + radio
  • Communications
  • Satellite transmissions
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14
Q

What are the uses of microwaves?

A
  • Cooking
  • Communications
  • Satellite transmission
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15
Q

What are the uses of infrared radiation?

A

Cooking as well as short range communications such as:

  • Remote controls
  • Optical fibres
  • Thermal imaging cameras
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16
Q

What are the uses of visible light?

A
  • Vision
  • Photography
  • Illumination
17
Q

What are the uses of ultraviolet rays?

A
  • Fluorescent lamps
  • Detecting forged bank notes
  • Disinfecting water
18
Q

What are the uses of x-rays?

A
  • X-ray scans
19
Q

What are the uses of gamma rays?

A
  • Sterilising food + medical equipment
  • Detection and treatment of cancer
20
Q

What are the dangers of microwaves?

A

Internal heating of body cells

21
Q

What are the dangers of infrared radiation?

A

Skin burns

22
Q

What are the dangers of ultraviolet rays?

A
  • Skin cancer
  • Eye conditions
23
Q

What are the dangers of x-rays?

A

Mutation or damage to cells in the body

24
Q

What can changes in atoms and nuclei lead to?

A

The generation of radiation

25
Q

What can cause changes in atoms and nuclei?

A

The absorption of radiation

26
Q

How are radio waves produced?

A

When electrons oscillate in an electrical circuit

27
Q

How are X-rays emitted?

A
  • When electron in an atom goes through an energy change
  • The electron will move to another orbit and then move back, when it moves back, X-rays are emitted

GCSE Physics (9 decks)

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