Chapter 5 Flashcards
Recent reports discussing the population bomb
a. verify that the population will expand above 20 billion
b. indicate that the explosion is slowing
c. show that it doesn’t matter since food supply grows equally fast
d. show that the population of the world is now decreasing
b. indicate that the explosion is slowing
A one-kiloton nuclear weapon, exploded at ground level, would destroy
a. about 1 square kilometer of the city
b. most of a small city (e.g., San Francisco)
c. most of a large city ( e.g., New York City)
d. many cities, if they were within 100 miles of each other
a. about 1 square kilometer of the city
For an atomic bomb, the number of doubling’s required is closet to
a. 10^23
b. 235
c. 80
d. 16
c. 80
An implosion type bomb is required for
a. a u-235 bomb
b. a Pu-239 bomb
c. a thermonuclear bomb
d. a boosted fission weapon
b. a Pu-239 bomb
Moore’s law relates to
a. urban legends
b. computer viruses
c. biological viruses
d. computer chip capability
d. computer chip capability
Which of the following does not represent exponential growth?
a. a computer virus
b. spread of smallpox
c. epidemic of flu
d. illness from anthrax
d. illness from anthrax
The statement that the Chernobyl accident will kill 24,000 people is based on
a. measurements of leukemia and thyroid cancer near Chernobyl
b. the linear hypothesis
c. the concept of a chain reaction
d. the fact that radioactivity is contagious
b. the linear hypothesis
A moderator is something that
a. slows neutrons
b. slows fission fragments
c. fission’s more easily than U-235
d. speeds up the chain reaction
a. slows neutrons
The dangerous radioactivity in fallout comes from
a. neutrons
b. neutrinos
c. gamma rays
d. fission fragments
d. fission fragments
Fallout is much worse if the bomb
a. is exploded near the ground
b. is exploded at high altitude
c. undergoes fewer generations
d. contains no fissile material
a. is exploded near the ground
A nuclear reactor cannot explode like a nuclear bomb because
a. it contains too much uranium
b. it contains no uranium
c. the nuclear reactor depends on slow neutrons
d. it is carefully designed to shut down quickly
c. the nuclear reactor depends on slow neutrons
According to the text, the least bad place to put nuclear waste is
a. in the sun
b. all the way into outer space
c. in our food
d. underground
d. underground
A breeder reactor is designed to produce
a. U-235
b. tritium
c. U-238
d. plutonium
d. plutonium
The number of nuclear weapons that the United States had was closet to
a. one million
b. ten thousand
c. one thousand
d. several hundred
b. ten thousand
PCR has been used to (choose all that are appropriate):
A. identify children of Thomas Jefferson
b. check the guilt of convicted murders
c. identify victims of 9/11
d. Identify the fathers of children
A. identify children of Thomas Jefferson
b. check the guilt of convicted murders
c. identify victims of 9/11
d. Identify the fathers of children
The Hiroshima bomb used
a. a gun design
b. thermonuclear fusion
c. implosion
d. boosted fission
a. a gun design
If the water moderator is lost from a nuclear reactor,
a. the reactor will explode like an atomic bomb
b. radiation from fission fragments will continue to produce heat
c. all of the power of the reactor will immediately go to zero
d. the chain reaction will increase, causing a re-activity accident
b. radiation from fission fragments will continue to produce heat
The material that might be “reprocessed” from nuclear waste is
a. tritium
b. U-238
c. U-235
d. Pu-239
d. Pu-239
Which of the following is not a good example of the doubling law?
a. lightning
b. avalanche
c. nuclear chain reaction
d. future population growth
d. future population growth
The Canadian Candu reactors use
a. light water
b. deuterium
c. thermonuclear fusion
d. tritium
b. deuterium
Plutonium can explode with fewer generations that can uranium because
a. plutonium fission release more neutrons
b. plutonium fission release more energy
c. plutonium does not require a moderator
d. plutonium turns into uranium
a. plutonium fission release more neutrons
In a nuclear power plant, the material that runs through the turbine is
a. fission fragments
b. electrons
c. neutrons
d. steam
d. steam
The number of deaths from the Nagasaki bomb is estimated to be
a, 100 to 500
b. 50,000 to 150,000
c. 2 to 3 million
d. 12 million
b. 50,000 to 150,000
The smallest container that could contain one critical mass of plutonium is
a. a tablespoon
b. a coffee mug
c. a large suitcase
d. the trunk of an automobile
b. a coffee mug