physci 1 Flashcards
1
Q
Cosmic rays hitting Earth’s atmosphere lead to the formation of
A
14C
2
Q
Type of radiation that has the greatest ability to penetrate matter
A
Gamma rays
3
Q
Neutrons are good “projectiles” for inducing nuclear reactions because they
A
have no electric charge
4
Q
The primary function of a moderator in a nuclear reactor is to
A
slow down neutrons
5
Q
Radioactive decay was discovered in 1896 by
A
Henri Becquerel
6
Q
The minimum amount of fissionable material necessary to sustain a chain reaction is called
A
the critical mass
7
Q
The nucleus is unstable when the number of protons in a nucleus exceeds;
A
83
8
Q
When a cobalt-60 nucleus undergoes beta decay, the nucleus formed is that of
A
Nickel-60
