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