Term
| Energy is the Sun is produced primarily by |
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Definition
|
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Term
| The mass of the nucleus is closest to |
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Definition
| 99% of that in the entire atom |
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Term
| Radioactivity in the Earth leads to |
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Definition
| All of the above (energy for volcanoes, helium for toy balloons, heat for geysers) |
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Term
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Definition
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Term
| A major reason that your body is radioactive is that |
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Definition
| you eat radioactive carbon in your food |
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Term
| The primary cause of death from the Hiroshima bomb was |
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Definition
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Term
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Definition
| among the most dangerous kind of radiation |
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Term
| Wine made from fossil fuel is not radioactive because |
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Definition
| the radioactivity has decayed away |
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Term
| If the half-life of an element is big, that means that |
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Definition
| it decays slower than one with a small half-life |
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Term
| Muller wears a wristwatch with tritium in the watch hands because |
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Definition
| no radiation emerges from the watch hands |
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Term
| After three half-lives, the fraction of the nuclei remaining is |
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Definition
|
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Term
| Most of the elements found on the earth were created |
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Definition
| in a supernova explosion (by GOD!) |
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Term
| The fraction of the U.S. population that dies from cancer is typically |
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Definition
|
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Term
| Watch dials containing radium glow because |
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Definition
| the radiation hits a phosphor |
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Term
| Choose all the items that derive from radioactivity |
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Definition
| helium for children's balloons, volcanic lava, warmth in deep mines, most cancer in the United States (ALL) |
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Term
| After four half lives, the surviving tritium atoms are removed. Compared to completely new tritium atoms, they are expected to live |
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Definition
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Term
| One rem of radiation dose takes how many gammas per square centimeter |
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Definition
|
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Term
| Which requires the larger dose? |
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Definition
|
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Term
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Definition
| widely used even though it is not proven |
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Term
| A Sievert is how many rem? |
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Definition
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Term
| Cancer is low in Denver because |
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Definition
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Term
| The number of deaths from the Chenobyl accident is about |
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Definition
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Term
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Definition
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Term
| Neutron activation is used |
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Definition
|
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Term
| Dirty Bombs may be less of a threat than people fear, because |
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Definition
| dirty bombs require plutonium, and this is hard for terrorists to obtain |
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Term
| Radioactivity in the Earth is responsible for |
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Definition
| helium we use in balloons |
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Term
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Definition
|
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Term
| The best way to measure the age of an ancient bone is |
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Definition
|
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Term
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Definition
| carried in satellites for power |
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Term
| Uranium is found on the Earth, even though it is radioactive. That's because |
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Definition
| it has a very long half-life |
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Term
| Carbon-14, compared to carbon-12, |
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Definition
|
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Term
| Alexander Litvinenko was assassinated with |
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Definition
|
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Term
| The radiation from cell phones |
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Definition
|
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Term
| The threshold for radiation illness is about |
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Definition
|
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Term
| The natural radioactivity (rate of nuclear decays) in a typical human body is closest to |
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Definition
|
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Term
| The source of energy in the Sun is |
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Definition
|
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Term
| Which of the following is the most toxic per gram? |
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Definition
|
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Term
| The radioactivity from your own body |
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Definition
| does cause cancer, but at a very low rate |
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Term
| Drinking alcohol is required to be radioactive because |
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Definition
| it proves that it is not made of petroleum |
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Term
| Recent reports discussing the population bomb |
|
Definition
| show that the population of the world is now decreasing |
|
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Term
| A one-kiloton nuclear weapon, exploded at ground level, would destroy |
|
Definition
| about 1 square kilometer of a city |
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Term
| For an atomic bomb, the number of doublings required is closest to |
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Definition
|
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Term
| An implosion type bomb is required for |
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Definition
|
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Term
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Definition
|
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Term
| Which of the following does not represent exponential growth |
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Definition
|
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Term
| The statement that the Chernobyl accident will kill 24,000 people is based on |
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Definition
|
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Term
| A moderator is something that |
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Definition
|
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Term
| The dangerous radioactivity in fallout comes from |
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Definition
|
|
Term
| Fallout is much worse if the bomb |
|
Definition
| is exploded near the ground |
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Term
| A nuclear reactor cannot explode like a nuclear bomb because |
|
Definition
| the nuclear reactor depends on slow neutrons |
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Term
| According to the text, the least bad place to put nuclear waste is |
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Definition
|
|
Term
| A breeder reactor is designed to produce |
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Definition
|
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Term
| The number of nuclear weapons that the United States had was closest to |
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Definition
|
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Term
| PCR has been used to (choose all that apply) |
|
Definition
| identify children of Thomas Jefferson, check the guilt of convicted murderers, identify victims of 9/11, identify the fathers of children (ALL) |
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Term
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Definition
|
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Term
| If the water moderator is lost from a nuclear reactor, |
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Definition
| radiation from fission fragments will continue to produce heat |
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Term
| The material that might be "reprocessed" from nuclear waste is |
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Definition
|
|
Term
| Which of the following is not a good example of the doubling law? |
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Definition
|
|
Term
| The Canadian Candu reactors use |
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Definition
|
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Term
| Plutonium can explode with fewer generations than can uranium because |
|
Definition
| plutonium fission releases more neutrons |
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Term
| In a nuclear power plant, the material that runs through the turbine is |
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Definition
|
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Term
| The number of deaths from the Nagasaki bomb is estimated to be |
|
Definition
|
|
Term
| The smallest container that could contain one critical mass of plutonium is |
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Definition
|
|
Term
| The bomb dropped on Hiroshima used as its fuel |
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Definition
|
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Term
| Saddam Hussein planned to enrich uranium using |
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Definition
|
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Term
| A centrifuge enrichment plant takes an area of about |
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Definition
|
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Term
|
Definition
|
|
Term
| One of the most dangerous radioactive materials from fallout is |
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Definition
|
|
Term
| The term China syndrome refers to |
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Definition
|
|
Term
| Depleted uranium is a useful substance because |
|
Definition
| an artillery shell made from it is very penetrating |
|
|
Term
| PCR was used to learn about |
|
Definition
| descendants of Sally Hemmings |
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Term
| Another name for the H-bomb is |
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Definition
|
|
Term
| A nuclear explosion similar to one produced by North Korea would destroy |
|
Definition
| the size of a college campus |
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Term
|
Definition
| despite claims, has never been observed |
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|
Term
| At Three Mile Island (choose all that are correct) |
|
Definition
| some of the uranium fuel melted, despite newspaper reports, no radioactivity was released |
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Term
| What distinguishes a breeder reactor from other reactors is that |
|
Definition
| it makes more fuel than it uses |
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Term
| Jupiter is not a star because |
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Definition
|
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Term
|
Definition
|
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Term
|
Definition
|
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Term
|
Definition
|
|
Term
| In a permanent magnet, the magnetism comes from: |
|
Definition
| the spin of the electrons |
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Term
|
Definition
|
|
Term
| Rail guns push the projectile using |
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Definition
|
|
Term
| Telsa wanted to use a transformer to distribute electricity because |
|
Definition
| it decrease the current going through long wires to reduce the loss of electricity |
|
|
Term
| You can demagnetize a natural magnet |
|
Definition
| by heating it about the Curie point |
|
|
Term
| What discovery now allows for headphones to be small and light? |
|
Definition
| rare-earth magnets, such as samarium cobalt |
|
|
Term
| Which of the following use or consist of permanent magnets (choose all that apply) |
|
Definition
|
|
Term
| Theoretically, the Earth should not have a permanent magnet in its core because |
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Definition
|
|
Term
| The Earth's magnetism comes from |
|
Definition
|
|
Term
| The Earth flips its magnetism, on average, approximately |
|
Definition
| twice every million years |
|
|
Term
| The north geographic pole of the Earth |
|
Definition
|
|
Term
| Compasses point north because |
|
Definition
| the Earth has an electric charge |
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|
Term
| Electricity will heat a wire if it has |
|
Definition
|
|
Term
| Static electricity occurs when two surfaces rub against each other and |
|
Definition
| electrons flow from one to another |
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|
Term
| Europe uses high voltage in homes because it |
|
Definition
| creates less heat in home wiring |
|
|
Term
| Lights and Tvs in Europe tend to flicker because Europe uses |
|
Definition
| 50 Hertz-the United States uses 60 Hertz |
|
|
Term
| When an object loses some electrons, it |
|
Definition
|
|
Term
| To get a spark you normally need |
|
Definition
|
|
Term
| A fuse is used in a house to prevent |
|
Definition
| house wires from overheating |
|
|
Term
| The Earth's magnetic flips are used for |
|
Definition
|
|
Term
|
Definition
| always point in the same direction |
|
|
Term
| The aspect of electricity that would make it most dangerous is high |
|
Definition
|
|
Term
| A certain kind of generator uses its own electricity to strengthen its magnetic |
|
Definition
|
|
Term
| The original superconductors were cooled with |
|
Definition
|
|
Term
| Room-temperature superconductors |
|
Definition
| have no practical applications |
|
|
Term
| High-temperature superconductors operate at approximately: |
|
Definition
| -123 C (liquid nitrogen temp) |
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|
Term
| We use AC instead of DC because |
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Definition
|
|
Term
| Topsy was executed with AC |
|
Definition
| to show the dangers of high voltage |
|
|
Term
|
Definition
| a power plant on every city block |
|
|
Term
| The current through a flashlight bulb is |
|
Definition
|
|
Term
| A stereo speaker produces sound by the force |
|
Definition
| of a magnetic field on an electric charge |
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|
Term
| The light from an ordinary lightbulb comes from the fact that |
|
Definition
| the wire is heated by electricity |
|
|
Term
| A Tesla Coil is a kind of |
|
Definition
|
|
Term
| Submarines can be detected by |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Most electric power is generated by |
|
Definition
| a wire moving through a magnetic field |
|
|
Term
| What invention made it possible to change low voltage AC to high voltage AV |
|
Definition
|
|
Term
| To reduce losses from resistance, electric power lines use |
|
Definition
|
|
Term
| An example of a transformer is |
|
Definition
|
|
Term
| Better motors and earphones have recently been made possible by |
|
Definition
|
|
