Term
| What does the element transform into after the nucleus of a radioactive element undergoes changes |
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Definition
| It can transform into a different isotope of the same element or into an entirely different element. |
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Term
| How would you describe a nuclei with too many or too few neutrons? |
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Definition
| A nuclei with too much/too few will cause it to be unstable / decay |
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Term
| What are the types of nuclear radiaton? |
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Definition
Alpha particles Beta Particles Gamma Rays Neutrons |
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Term
| Which type of nuclear radiation can penetrate farthest through matter? |
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Definition
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Term
What does the "c" stand for in the equation: E=mc2 |
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Definition
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Term
| In alpha decay, what happens to the mass number of the atom before they decay? |
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Definition
| It equals the mass sum of the mass numbers of the products |
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Term
| What are alpha particles? |
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Definition
| Particles made up of two protons and two neutrons |
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Term
| Write a chemical equation for alpha decay |
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Definition
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Term
| What happens to the nucleus during beta decay? |
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Definition
| The neutron decays into a proton |
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Term
| What is the brightness of a light bulb determined by? |
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Definition
Resistane of the filament |
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Term
| What happens to the atomic number of the elemtn when a nucleus undergoes nuclear decay by gamma rays? |
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Definition
| Ther eis no change in the atomic # of the element because the # of proptons didn't change |
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Term
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Definition
| When very light nuclei combine to form heavy nuclei |
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Term
| What is the element that could meet Earth's energy demands for millions of years? |
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Definition
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Term
| What part is unstable on radioactive materials? |
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Definition
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Term
| How can you slow down a fission chain reaction? |
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Definition
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Term
| Describe a chain reaction |
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Definition
| A continuous series of nucleear fission reactions |
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Term
| What are alpha particles? |
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Definition
| Alpha particeles are positivley charged and more massive than any other type of nuclear radiation |
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Term
What do electric field lines indicate? |
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Definition
| Point in the direction of the electric field |
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Term
| In which direction do field lines point with an object that has a positive charge? |
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Definition
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Term
| How is radon gas produced? |
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Definition
| Radioactive decay of Uranium-238 |
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Term
| What are the short lived isotopes used in agricultrue to monitor water flow through crops called? |
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Definition
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Term
What determines whether a charge will move in a material? |
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Definition
| Partly how tightly electrons are heldin the atoms of the material |
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Term
| What does the particels that are released by the radioactive sources in smoke alarms produce |
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Definition
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Term
| What are radioactive tracers |
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Definition
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Term
| What does nuclear radiation refer to? |
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Definition
| Particles that are released from nucleus during radioactive decay. |
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Term
| Desscribe the ideal location for a radioactive waste storage facility? |
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Definition
| Sparsley populated areas with little water above & underground & free of earthquakes |
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Term
| What will happen to the overall resistance of a circuit when too many appliances are connected |
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Definition
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Term
| What type of raiation is used to treat brain tumors? |
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Definition
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Term
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Definition
| Form a single pathway for charger to flow |
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Term
| Which small radioactive source is present in smoke detectors? |
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Definition
| An alpha emitting isotope |
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Term
| Which direction does electric field lines around a negativley charged paricle point |
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Definition
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Term
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Definition
| A combination of connected electric cells that convert chemical energy into elecric energy |
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Term
| What is the opposite of fusion? |
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Definition
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Term
| Give an example of electric cells |
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Definition
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Term
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Definition
| The rate at which charges move through a conductor |
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Term
What happens to the energy of beta particles when they ionize? |
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Definition
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Term
| Where does background radiation come from? |
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Definition
| Most of it comes from natural forces such as sun, heat, soil, rocks, and plants. |
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Term
| What do we know about the use of nuclear reactors to generate electricity? |
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Definition
| Used in dozens of countries to generate electricity. Energy is produced by triggering a controlled fission reaction in uranium-235 |
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Term
| What does electric force depend on? |
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Definition
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Term
| How is resistance caused? |
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Definition
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Term
What is the equation for resistance? |
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Definition
| resistance=voltage/current |
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Term
| What is the equation for potential difference? |
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Definition
| Change in the electrical potential energy of a charged particel divided by its charge |
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Term
How would you describe the resistance of an insulator? |
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Definition
| Insulators have high resistance |
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Term
List the followin in order from most resistance to least resistance superconductor, conductor, semiconductor, insulator |
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Definition
| insulator, superconductor, semiconductor, conductor |
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Term
| What is a parallel circuit |
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Definition
| Form a multiple pathway for charges to flow |
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Term
| What is the SI unit for resistance |
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Definition
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