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6. 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

7. What do radioactive materials give out from their nucleus's?

  • Chemicals
  • Nuclear Radiation
  • More radioactive materials

8. What is Beta radiation?

  • A fast moving nucleus
  • A fast moving neutron
  • A fast moving electron
  • A fast moving proton

9. What is the energy source for nuclear power stations?

  • Uranium
  • Fossil Fuels
  • Krypton
  • Sodium Chloride

10. What happens when a beta particle is emitted from the nucleus?

  • Atomic Mass is the same, Atomic Number increases by 1
  • Atomic mass increases by 7 and the Atomic number stays the same
  • Atomic number and mass stay the same. Nucleus is ionized.

11. Why is static electricity a problem for flour mills?

  • Flour mills have a high concentration of fine particles so a single spark could lead to an explosion.
  • Its not.
  • Static causes flour to turn into water
  • Static make the flour change state.

12. Name 3 uses of static electricity...

  • To shock your friends
  • Spray painting and computer making
  • Defibrillators, smoke detectors and spray painting
  • Deifbrillators and washing machines

13. 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

14. 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

15. What is gamma radiation?

  • A helium nucleus
  • An electromagnetic wave
  • A fast moving electron

16. Why can Static Electricity become a nuisance?

  • It can make your skin itchy.
  • It makes clothes stick to your skin, and can cause dust particles to stick to insulating materials like TV screens
  • It hurts a lot!
  • It makes you delusional.

17. Which wire is brown?

  • Earth Wire
  • Fuse wire
  • Live Wire
  • Neutral Wire

18. What is ultrasound?

  • Sound waves above 20,000 hertz
  • A very loud sound
  • Sound waves below 20,000 hertz
  • Very high quality sound

19. What is the affects the amount of background radiation?

  • Cosmic rays and rocks in the area
  • The moons position in the sky
  • The rocks in the area and tides on the shore

20. What is resistance measured in?

  • Voltage
  • Centimeters
  • Ohms
  • Joules