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Physics National 5 R

QuestionAnswer
What's Absorbed Dose? Energy absorbed Per Unit Mass
What's The Units of Absorbed Dose? Grays (Gy)
List The applications of Background Radiation Medical treatment, Sterilisation, Smoke detectors, Thickness Testing
List Artificial Sources of Background Radiation Nuclear Power, Xrays, Nuclear tests
List Natural sources of Background Radiation Radon gas, Rocks, Cosmic rays, Food
What’s Alpha Radiation? 2 Protons + 2 Neutrons (helium nucleus)
What’s Beta Radiation? Fast Moving Electron Neutral
What’s Gamma Radiation? High energy electromagnetic wave
What is Activity? Number of Decays Per Second
What is Ionisation Ionisation is when an atom gains or loses an electron. It is caused by exposure to nuclear radiation.
What's The Units of Activity? Becquerel (Bq)
(Relative ionising effort) How good is Alpha Radiation at knocking electrons off atoms? High
(Relative ionising effort) How good is beta Radiation at knocking electrons off atoms? Medium
How Many joules is equal to 1 Gray Low
What Can Beta Radiation Cause if exposed to living beings? Stopped by Paper, Air
What do you use for open ended Questions and explain it? DREADS- DREADS stands for Definition, Relationships, Examples, Act (diagrams), Differences, and Similarities.
What does the half life experiment require? Radioactive sample Geiger-Muller tube and counter Stop clock
What are the dangers of Ionising Radiation to Living things Damages DNA and cancer
What's Equivalent Dose Absorbed dose x weighting factor
What are the Units of Equivalent Dose Siverts (Sv)
What's Equivalent Dose Rate? Equivalent dose per unit time
What are the Units of Equivalent Dose Rate? Sv h-1 OR Sv s-1
What is Half-Life? Time for activity to halve its original Activity
Describe Nuclear Fission Heavy Nucleus splits and Smaller Nuclei + Energy
Describe how Nuclear fission is used to generate electricity? Heat to steam to turbine to electricity
What is Nuclear fusion? Light nuclei join heavier nucleus + energy
What are the challenges of nuclear fusion? Needs extreme heat, hard to contain
Created by: Arham78622
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