Tuesday 7 May 2013

7.5 describe the nature of alpha and beta particles and gamma rays and recall that they may be distinguished in terms of penetrating power

alpha particles are two neutrons and two protons; also known as a helium nucleus. Alpha particles could not penetrate a piece of paper if they tried.

Beta particles are electrons, they are emitted when a neutron turns into a proton and an electron. It won't penetrate aluminium.

Gamma rays are a type of electromagnetic wave, they are often emitted alongside the other types of radiation. Gamma cannot penetrate lead.
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11 comments:

  1. Meli x22 April 2014 at 05:59

    I was taught that gamma rays are unstoppable, they can only be reduced by lead, but not stopped? x

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  2. Unknown15 June 2014 at 12:26

    agreed

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  3. Unknown1 January 2015 at 09:28

    Gamma rays can be stopped by several centimeters of lead or several meters of concrete according to bitesize

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  4. Unknown5 January 2015 at 09:19

    Yes

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  5. Unknown25 January 2016 at 16:28

    Gamma rays can never be stopped its just a certain amount of lead halves the amount of gamma rays each times but some will always penetrate

    ReplyDelete
  6. Joao14 April 2017 at 03:11

    True

    ReplyDelete
  7. Anonymous22 November 2017 at 08:06

    Lmao this blog isnt trustworthy

    ReplyDelete

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