Which one statement is correct about nuclear fission?
- It occurs when a high speed neutron smashes the uranium 235 nucleus to bits.
- It happens when an alpha particle is released from uranium 235
- It happens when uranium 238 is exposed to very strong acids.
- It happens when uranium 235 nucleus captures an extra neutron which is moving at quite a slow speed.
Which one of these is NOT a use for radiation?
- Smoke detector
- Thickness detector
- Leak detector
- TV detector
High level nuclear waste needs to be disposed of correctly. How is this done?
- Putting the material into glass, and burying it deep underground.
- Taking it to the town's rubbish dump.
- Burning it.
- Turning it into liquid and putting it down the drain.
Which of these would you expect to be described as low-level waste?
- Fall out from an atomic bomb.
- Packaging and protective clothing used by staff in the nuclear industry.
- Old fuel rods from a nuclear power station
- The graphite core from a ractor that is being demolished.
Which one statement is correct about carbon 14?
- It kills living things.
- It gives of alpha particles.
- It is taken in all the time by living things, but when the organism dies, no more is taken in.
- Its half life is 40 000 years