Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physics > Nuclear and Radioactivity > Flashcards

Nuclear and Radioactivity Flashcards

1
Q

What is a beta-plus particle?

A

A fast moving positron that is produced and emitted in the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is required to block gamma radiation?

A

A few centimetres of lead or a few metres of concrete

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the range of beta radiation?

A

around a metre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What changes occur to the nucleus during gamma decay?

A

The nucleus looses energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is emitted during beta plus decay?

A

Positron and electron neutrino

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which radiation is not deflected by a magnetic field

A

Gamma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What happens to A and Z during beta plus decay?

A

A remains the same and Z decreases by 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is an alpha particle the same as?

A

A helium nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are some human-caused sources of background radiation?

A

Medical
Buildings
Food
Nuclear Weapons
Air Travel
Nuclear Power

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What can block Alpha radiation?

A

Paper or skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

describe the nuclear model of the atom

A

A positive nucleus surrounded by charged electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In a cloud chamber, when straight tracks all with the same length are produced which radiation is observed?

A

Alpha because all alpha particles have the same kinetic energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What happens to A and Z numbers during gamma decay?

A

there are no changes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What particle is emitted during beta minus decay?

A

Electron and antineutrino

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the range of gamma radiation in the air?

A

Infinite

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the relationship between the intensity of gamma radiation and distance from the source?

A

Inverse square relationship

17
Q

What can block beta radiation?

A

A few millimetres of aluminum

18
Q

What are the changes in A and Z number during alpha decay?

A

A decreases by 4 and Z decreases by 2

19
Q

Why is ionising radiation harmful?

A

It destroys cell membranes and damages DNA

20
Q

What changes occur in the nucleus during beta minus decay?

A

A neutron changes into a proton

21
Q

What is a gamma ray?

A

A high-energy electromagnetic wave or photon

22
Q

What changes occur in the nucleus during beta plus decay?

A

A proton becomes a neutron

23
Q

Which type of nuclear radiation is deflected most by a magnetic field?

A

Beta decay

24
Q

What are 3 natural sources of background radiation?

A

Radon gas, Rocks, cosmic rays

25
Q

What experiment lead to the discovery of the nucleus?

A

Alpha scattering

26
Q

In a cloud chamber, what type of radiation produce wispy/ curled tracks?

A

Beta

27
Q

What happens to A and Z values during beta minus decay?

A

A stays the same and Z increases by 1

28
Q

What did JJ Thompson discover in 1897?

A

Electrons

29
Q

what is a beta minus particle?

A

a fast moving electron produced and emitted in the nucleus

Physics (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions