Radiation

Question 1

alpha’s range in air…?

Answer 1

has the shortest range in air

Question 2

beta is absorbed by…?

Answer 2

will pass through paper but is stopped by thin metal

Question 3

gamma’s ionising power…?

Answer 3

is very weakly ionising

Question 4

what is the difference between an alpha particle and a helium atom?

Answer 4

a helium atom would have electrons but an alpha particle wont have any

Question 5

the type of radiation with the greatest charge is…?

Answer 5

beta

Question 6

the type of radiation with the greatest range in air is…?

Answer 6

gamma

Question 7

the two types of radiation that have no charge are…?

Answer 7

gamma and neutron

Question 8

differences between the plum pudding model and the nuclear model…?

Answer 8

Plum Pudding Model

• ball of cloud that was positively charged
• postive and negative electrons were just found randomly in it
• positive and negative electrons didnt move

Nuclear Model

• most of the atom was made up of empty space
• something positive must have been in the centre as some alpha particles deflected randomly

Question 9

isotopes…?

Answer 9

they have the same number of protons but a different number of neutrons

Question 10

during the process of nuclear fission…?

Answer 10

nuclear fission causes the nuclei in the nuclear reactor to split

Question 11

inside which part of a nuclear power station would molybdenum be produced?

Answer 11

the nuclear reactor

Question 12

what does ‘half-life’ mean?

Answer 12

how long it takes the element to decay by half