Radioactivity

Question 0

Alpha particles are of what charge

Answer 0

Positive

Question 1

What are the three radiations emitted

Answer 1

Alpha, beta, gamma radiation

Question 2

Isotopes of an element

Answer 2

Atoms with same number of protons but different numbers of neutrons

Question 3

Alpha radiation is stopped by what

Answer 3

Paper or a few cms if air

Question 4

Beta radiation is stopped by

Answer 4

Thin metal or metre of air

Question 5

Gamma radiation is stopped by

Answer 5

A thick lead and has an unlimited range in air

Question 6

Alpha particles how ionising are they

Answer 6

Strongly ionising

Question 7

Alpha particles can be deflected by what

Answer 7

Electric and magnetic fields

Question 8

Beta how ionising are they

Answer 8

Less ionising then alpha

Question 9

Can beat particles be deflected

Answer 9

Yes by electric and magnetic fields in opposite direction to alpha particles

Question 10

How ionising are gamma rays

Answer 10

Weakly ionising

Question 11

Are gamma rays deflected

Answer 11

No

Question 12

Which type of nuclear radiation is the least penetrating

Answer 12

Alpha radiation

Question 13

Which type of nuclear radiation is the least ionising

Answer 13

Gamma

Question 14

Half life

Answer 14

Measures how quickly the radioactivity decreases

Question 15

Alpha sources where are the used

Answer 15

Smoke alarms

Question 16

Half life for alpha

Answer 16

Several years

Question 17

Beta sources used for

Answer 17

Thickness monitoring in factories eg how thick paper is ect

Question 18

Half life for beta

Answer 18

Many years

Question 19

Gamma used for

Answer 19

Tracers in medicine

Question 20

Half life of gamma

Answer 20

Few hours