P2: Radiation and life

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P2 Radiation and life

• Self assessment test

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Question 1

• We can see the Ultraviolet part of the
  electromagnetic spectrum
• True False

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Well done!
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End
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No, sorry

• You need to revise the electromagnetic spectrum.
• With this link, please remember that often, the
  electromagnetic spectrum is pictured with the
  high energy waves (e.g. gamma rays) on the right
  hand side.

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Question 2 which of the people is the most
likely to burn quickest when out on a sunny day?
Click on the correct face.
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No, sorry

• You need to revise how UV light can affect our
  skin
• Click here.

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Question 3 Benefits of UV light.

• When the skin absorbs sunlight, it causes the
  body to make more of which vitamin?
• A
• B
• C
• D

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No sorry

• You need to learn about the benefits of UV light
  for health
• http//en.wikipedia.org/wiki/UltravioletBeneficia
  l_effects

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Question 4 The atmosphere absorbs, reflects and
transmits radiation. Which of those does this
show?

• First, click here.
• Absorb
• Transmit
• Reflect

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No, sorry

• You need to learn the difference between absorb,
  transmit and reflect.
• Go to the next page.

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Transmission
TRANSMISSION
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Reflection
REFLECTION
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Absorption
ABSORPTION
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Question 5 Ozone has a formula of O3. What are
the names of the chemicals that change O3 to
oxygen (O2)?

• AFCs
• BFCs
• CFCs

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No, sorry

• Watch this animation to get the correct answer.

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Question 6 In order for infrared radiation to be
detected, it must be

• absorbed
• reflected

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No sorry..

• See the animation on page 11 of the following
  link
• http//lgfl.skoool.co.uk/content/keystage4/physics
  /pc/lessons/uk_ks4_waves_2/h-frame-ie.htm

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Question 7 Which of the following types of
radiation is ionising?

• Visible light
• Infrared
• Ultraviolet
• Microwave

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No, sorry

• You need to learn about ionising and heating
  radiation, and which types they include. Go to
• http//www.bbc.co.uk/schools/gcsebitesize/science/
  21c/radiation/electromagneticradiationrev6.shtml

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Question 8 Which type of radiation do mobile
phones use to communicate with the base station?

1. Infrared
2. Microwave
3. Gamma
4. Ultraviolet

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No, sorry

• Go to
• http//www.bbc.co.uk/schools/gcsebitesize/science/
  21c/radiation/hazardsradiationrev3.shtml

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Question 9 Is microwave radiation ionising?

1. Yes
2. No

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No, sorry.

• You need to learn which types of radiation are
  ionising.
• Go to
• http//www.bbc.co.uk/schools/gcsebitesize/science/
  21c/radiation/electromagneticradiationrev6.shtml

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Question 10 Are x-rays ionising?

1. Yes
2. No

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No, sorry

• Go to
• http//www.bbc.co.uk/schools/gcsebitesize/science/
  21c/radiation/electromagneticradiationrev6.shtml

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Question 11 If we didnt have an atmosphere,
what would happen to the temperatures of our
planet?

1. They would get hotter
2. They would get colder
3. They would fluctuate to greater extremes

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No, sorry

• To get the correct answer, compare it to Mars,
  which doesnt have an atmosphere like ours (click
  on the solar system button)
• http//www.scienceyear.com/planet10/solar_preload.
  html

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Question 12 Which of these three things does not
increase the CO2 levels in our atmosphere?

• Driving cars that use fossil fuels
• Factories
• Photosynthesis
• Respiration

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No, sorry

• You need to learn about the carbon cycle.
• Please go to
• http//www.biology.ualberta.ca/facilities/multimed
  ia/uploads/alberta/CarbonCycle.html

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Well done!

• If you got them all right first time, thats
  great!
• Otherwise, please click on this button to take
  the test again, but this time try to get them all
  right, now youve done some revision.