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106 E1
| Question | Answer |
|---|---|
| What is matter? | Anything that has mass and occupies space (measured in kilograms). |
| What is energy? | The ability to do work. |
| What is kinetic energy? | Energy of motion. |
| What is potential energy? | Stored energy. |
| What is radiation? | The transfer of energy through space or matter. |
| What is ionization? | The removal of an electron from an atom, creating a charged ion. |
| What is the difference between radiation and ionization? | Radiation is energy transfer; ionization is when that energy removes an electron. |
| What is the formula for work? | Work = force × distance. |
| What is velocity? | Speed with direction (measured in m/s). |
| What is ALARA? | As Low As Reasonably Achievable |
| What is the most common natural source of radiation? | Radon |
| What are the three subatomic particles and their charges? | Proton (+), neutron (0), electron (−). |
| What determines the identity of an element? | The number of protons (atomic number). |
| What is an isotope? | Atoms with the same number of protons but different numbers of neutrons. |
| What is half-life? | The time it takes for a radioactive substance to decrease to half its original amount. |