Nuclear Physics (Grade 10)
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Nuclear Physics
1.
What is the half-life of a radioisotope if 50.0 grams of an original 200.-gram sample of the isotope remains unchanged 15.60 years?
- 7.80 years
- 15.60 years
- 23.40 years
- 3.90 years
2.
How many years have passed if 25 grams of an original 100.0-gram sample of Sr-90 remains unchanged?
- 58.2 years
- 87.3 years
- 29.1 years
- 116.4 years
3.
Polonium-210 has a half-life of 138 days. Determine the total mass of an original 300-gram sample of Po-210 that remains unchanged after 690 days.
4.
Carbon-14 has a half-life of 5715 years. A dead tree sample contains 1/16 as much C-14 as is present in a living tree sample. How old is the dead tree?
5.
Which nuclear emission only involves the release of energy?
- alpha
- beta
- positron
- gamma
6.
Which nuclear emission involves the release of electrons, only?
- alpha
- gamma
- beta
- positron
7.
Which nuclear emission involves the release of helium nuclei?
- alpha
- gamma
- positron
- beta
8.
Which of the following nuclear emissions has the greatest penetrating power?
- alpha
- gamma
- beta
- positron
9.
Which of the following nuclear emissions involves the release of a particle with no mass and a charge of +1?
- proton
- beta
- positron
- alpha
10.
The process by which a nucleus spontaneously undergoes a change from a state with less binding energy to a state with more binding energy is called
- nuclear fusion.
- nuclear fission.
- radioactivity.
- radioactive decay.
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