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P2 Quiz

Leah Firmstone 17 preguntas 4,8 (4 valoraciones)

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Preguntas del test (17)

  1. 1Choose the sources of light.
    1. ALightbulb
    2. BSun
    3. CMoon
    4. DFire
    5. EWater
  2. 2Light belongs to the electromagnetic spectrum, a family of electromagnetic waves that travel at a speed of 300 000 km/s through space, which is a vacuum.
    1. AVerdadero
    2. BFalso
  3. 3What is a 'photon'?
    1. AA tiny packet of energy that behaves similar to a wave, but also as a stream of particles.
    2. BA picture taken of light.
  4. 4The intensity of [blank_start]electromagnetic[blank_end] radiation gets less as you move [blank_start]further[blank_end] away from the source. The intensity of the Sun's radiation decreases further away from it because it is spread over a [blank_start]larger[blank_end] area. This is why planets more distant from the Sun than the Earth are much [blank_start]cooler[blank_end] than our planet. The earth receives more of the Sun's electromagnetic radiation because the intensity of the radiation is [blank_start]greater[blank_end] closer to the Sun.
    [blank_start]Intensity[blank_end] = energy transferred per second per m^2.
    If you move a torch closer to a surface, its light spreads over a smaller area and becomes [blank_start]brighter[blank_end]. The total energy from the torch each second is the [blank_start]same[blank_end], but the intensity of light on the surface increases. This happens because as the distance [blank_start]doubles[blank_end], the area the energy spreads over increases four-fold, and so the intensity [blank_start]decreases[blank_end] four-fold.
    1. Aelectromagnetic
    2. Bfurther
    3. Clarger
    4. Dcooler
    5. Egreater
    6. FIntensity
    7. Gbrighter
    8. Hsame
    9. Idoubles
    10. Jdecreases
  5. 5X-Rays have a higher frequency than gamma rays.
    1. AVerdadero
    2. BFalso
  6. 6Radiation workers increase their risk of exposure to X-rays and [blank_start]gamma[blank_end] rays. They can choose whether to accept this [blank_start]risk[blank_end]. The risk can be monitored using [blank_start]dosimeters[blank_end], allowing problems to be spotted before too much harm is done.
    People who have mobile phone [blank_start]masts[blank_end] built near their homes have exposure to [blank_start]microwaves[blank_end] forced upon them. They tend to be less [blank_start]willing[blank_end] to accept any level of risk, and are more likely to [blank_start]overstate[blank_end] possible risks.
    1. Agamma
    2. Brisk
    3. Cdosimeters
    4. Dmasts
    5. Emicrowaves
    6. Fwilling
    7. Goverstate
  7. 7We are surrounded by ionising radiation all the time. The risk to health is very low, but people tend to overstate it. Why?Imagen de la pregunta 7
    1. Ait is unfamiliar to us
    2. Bit is invisible and hard to detect
    3. Ceffects can be long lasting
    4. Dpeople want to deter new projects eg. nuclear power stations
    5. Epeople are unsure of risks due to lack of education
  8. 8Why does a substance warm up when it absorbs radiation?
    1. Athe energy from the absorbed radiation is transferred to thermal (heat) energy
    2. Bthe radiation excites the particles, generating thermal energy
    3. CBoth!
  9. 9The risks to living cells from microwaves are very low because microwaves have a low frequency.
    1. AVerdadero
    2. BFalso
  10. 10What is ozone?
    1. AA form of oxygen containing three oxygen atoms.
    2. BA substance that increases the amount of UV radiation on Earth.

Información

Descripción
GCSE (P2 - Radiation and Life) Physics Test sobre P2 Quiz, creado por Leah Firmstone el 31/10/2015.
Idioma
English
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Valoración
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