Physics | Unit 4 | Additional Science

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  • Created by: A♥
  • Created on: 04-06-13 16:38

1. Why must tracers have short half-lives?

  • So the patient isn't radioactive for long
  • So the people selling them can make more money
  • Less storage needed
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Other questions in this quiz

2. What is resistance?

  • The measure of how hard it is to get a current throught a component at a particular voltage
  • Something that stops something
  • How hard it is to get through something
  • he refusal to accept or comply with something; the attempt to prevent something by action or argument.

3. How is Radiation measured?

  • By the number of nuclear decays emitted per second
  • By the number of protons and neutron emitted
  • With a Radiationater
  • By the number of nuclear decays emitted per day

4. How do body scans involving ultrasound waves work?

  • The sound wave goes through the skin by osmosis and is reflected back
  • Ultrasound waves are reflected at boundaries. The time taken for these to be detected can be used to calculate the depth.
  • A loud noise is projected through the patients body until its echoed back. The loudness of the echo can be used to work out the depth
  • A sound wave goes through the body and the if you listen closely you can hear whats going on inside

5. What is alpha radiation?

  • an electromagnetic wave
  • Radiation with a helium nucleaus
  • A fast moving electron
  • Radiation with a Hydrogen nucleus

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