Brainscape's Knowledge GenomeTM

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


See full index

Physics > Radiation > Flashcards

Radiation Flashcards

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

What three types of radiation are there?

A

Alpha, beta and gamma

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

Where does radiation come from?

A

Unstable nuclei

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

List the types of radiation in order of increasing penetration ability

A
  1. Alpha-sheet of paper
  2. Beta-3mm aluminium
  3. Gamma-3m concrete
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is an alpha particle?

A

Effectively a helium nucleus-2 photos and 2 neutrons +2 charge

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

What is a beta particle?

A

An electron -1 charge

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

What is a gamma ray?

A

An electromagnetic wave with no charge

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

What is the ionising ability of alpha?

A

Very strong

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

What is the ionising ability of beta?

A

Moderate

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

What is the ionising ability of gamma?

A

Weak

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

What is ionisation?

A

The process of removing an electron from an atom atom

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

How do use a magnetic field to separate radiation

A

A magnetic field causes a moving charged particle to be deflected. The direction depends on the charge

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

How do you use an electric field to separate radiation?

A

Pass it through two electrodes. The particles will move towards the opposite electrode

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

What is an ionic half life?

A

The time taken for half of the atoms to decay

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

What problems does radiation cause?

A
  1. Mutations
  2. Damage to cells and tissue
  3. Disposal of waste
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What was the Geiger-matsden experiment?

A
  1. They fired alpha particles at gold leaf

2. Most went straight through. Some were deflected. Some bounced back

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

What was Rutherford’s atom like?

A

That the atom was mostly empty space with the tiny nucleus in the middle as opposed to spread out

17
Q

What happens in nuclear fission?

A
  1. Uranium 235 breaks apart when it is struck by a low-charge neutron
  2. Releases KE as gamma rays and decay fragments
  3. The parent nucleus(235) froduces two daughter nuclei.
  4. If these are absorbed by other fissile nuclei then a chain reaction ensues.
18
Q

What does the moderator do in nuclear fission?

A

Absorb some of the energy of fast neutrons so they are absorbed easily to sustain the chain reaction

19
Q

What do the control rods do in nuclear fission?

A

Absorb neutrons to eliminate them. Can be raised to speed up the reaction or lowered to shut down the reaction

Physics (10 decks)

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