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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