Reference no: EM131412300
1. What is emitted from a nucleus if beta particle emission occurs?
an electron
the equivalent of a helium nucleus
high frequency energy
a neutron
2. Which represents the units used to measure the ability of radiation to cause harm to living tissue?
Rem
Temperature
Grams
Joules
3. What types of forces exist between 2 neutrons in the nucleus?
Electrical repulsion only
Electrical attraction and Strong nuclear force
Strong nuclear force only
Electrical repulsion and Strong nuclear force
4. A neutron without an adjacent proton is _______. It decays to a proton by emitting _______.
unstable, an electron
stable, a positive charge
stable, gamma radiation
unstable, an alpha particle
5. If a substance has a half life of 3 days. How much of a 30 gram sample will remain as the original substance after 6 days?
3.75
10
7.5
5
6. How is a nuclear power plant similar to a conventional coal burning power plant in creating electricity?
they both use heat to create steam, to turn a turbine
the processes in each plant are completely diffierent
they both use coal as a starting material
they both create electricity by beta emission
7. What kind of containers are needed to confine a nuclear fusion reaction?
glass containers
nonmaterial containers, such as a magnetic field
temperature resistant ceramic container
nonmetal containers
8. In a year, which of the following sources, on average, provides the greatest source of radiation exposure to humans?
diagnostic X-rays
air (radon-222)
cosmic radiation
weapons-test fallout
9. Carbon-14 dating makes use of a radioactive isotope of carbon C-14, which has a half life of 5730 years. Which statement below is FALSE?
A higher amount of C-14 with decay during the first-thousand years than during the second-thousand years
After 11460 years, all of the C-14 would have decayed
After 5730 years, half of the C-14 would have decayed
Carbon-14 dating is not useful for a sample estimated to be 1 million years old
10. An isotope of thorium, Th-234, has 90 protons and 144 neutrons. If this nucleus emits an alpha particle, what is the the symbol for the new element created?
Pa-232
Ra-230
Th-230
Rn-232.
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