Brainscape's Knowledge GenomeTM

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


See full index

Physics - National 5 > Radiation > Flashcards

Radiation Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

What is nuclear radiation?

A

A radioactive element which emits radiation from the nucleus.

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

What does the Atom contain?

A

Protons, Neutrons and Electrons

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

What are the main types of Nuclear Radiation?

A

Alpha, Beta & Gamma

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

What is a Alpha Particle?

A

A helium nucleus that has two protons and two neutrons and has a large mass and is postively charged.

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

What is a beta Particle?

A

A high-speed electron that has a very small mass is negatively charged.

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

What are Gamma Rays?

A

High energy Electromagnetic waves.

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

How much ionsation does each type of nuclear radation do.

A

Alpha - most - Beta - Middle - gamma Least

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

How pentrating is each type of radation?

A

Alpha - Least Beta - Middle Gamma rays - most

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

What can alpha particles be stopped by?

A

A sheet of paper

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

What can beta particles be stopped by?

A

a few millimetres of Thin aluminium

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

What can gamma rays be stopped by?

A

Several Centimetres of Lead

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

What is the definition of Activity of a source?

A

The number of nuclei which disintegrate in one second.

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

What is the Unit for Activity (A)

A

Becquerels (Bq)

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

What are 3 natural sources of background radation?

A

cosmic rays from space - the body - some foods such as bananas

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

What are 2 artificial sources of background radation?

A

fallout from nuclear weapons testing and radioactive waste from nuclear power stations

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

What is absorbed dose?

A

energy absorbed per unit of mass

17
Q

What is the unit for Absorbed Dose?

A

Grays (Gy)

18
Q

What is Equivelent Dose?

A

The measure of the biological effect of radiation

19
Q

What is the unit for equivalent dose?

A

Sieverts (Sv)

20
Q

What is the annual effective dos limits for the general public and radiation workers?

A

1 mSv per year for general public - 20mSv per year for radiation workers

21
Q

What is Equivalent dose rate?

A

The equivalent dose recieved per unit of time.

22
Q

What are 3 applications of nuclear radiation?

A

Radiotherapy, Sterilisation, Radioactive tracers

Physics - National 5 (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions