test 1

Question 0

Critical mass

Answer 0

The minimum mass of a fissionable material required to generate a self-sustaining nuclear chain reaction

Question 1

Breeder reactor

Answer 1

a Nuclear reactor that produces more fissionable material than it uses

Question 2

Electron

Answer 2

a subatomic particle that has a very low mass and carries a single negative electric charge

Question 3

ion

Answer 3

And Atom or group of atoms that has a net positive or negative charge

Question 4

Isotope

Answer 4

an Atom that has the same atomic number but different mass number

Question 5

Mass defect

Answer 5

The difference between the mass of an Atom and the sum of the masses of its protons neutrons and electrons

Question 6

Moderators

Answer 6

Substances that can reduce the Kinetic Energy of neutrons

Question 7

Neutrons

Answer 7

Subatomic particles that bear no net electric charge. it’s mass is slightly greater than a protons

Question 8

Nucleus

Answer 8

The central core of an Atom

Question 9

Nuclear binding energy

Answer 9

The energy required to break up a nucleus into protons and neutrons

Question 10

Nuclear chain reaction

Answer 10

a self-sustaining sequence of nuclear fission reactions

Question 11

Nuclear fission

Answer 11

The process in which a heavy nucleus divides to form small nuclei of intermediate mass and one or more neutrons

Question 12

Nuclear fusion

Answer 12

The combining of small nuclei into larger ones

Question 13

Nuclear reaction

Answer 13

a reaction involving change in an atomic nucleus

Question 14

Nuclear transmutation

Answer 14

The change undergone by a nucleus of the result of bombardment by neutrons or other particles

Question 15

Plasma

Answer 15

a gaseous state of matter consisting of positive ions and electrons

Question 16

Positron

Answer 16

a particle that has the same mass as the electron but bears a +1 charge

Question 17

Proton

Answer 17

a subatomic particle having a single positive electric charge. the mass of a proton is about 1840 times that of an electron

Question 18

Radiation

Answer 18

The emission and transmission of energy through space in the form of particles and/or waves

Question 19

Radioactive decay series

Answer 19

a sequence of nuclear reactions that ultimately result in the formation of a stable isotope

Question 20

Thermonuclear reactions

Answer 20

Nuclear fusion reactions occur at very high temperatures

Question 21

Tracers

Answer 21

Isotopes, especially radioactive isotopes that are used to trace the path of the atoms of an element in a chemical or biological process

Question 22

Transuranium elements

Answer 22

Elements with atomic numbers greater than 92