Brainscape's Knowledge GenomeTM

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


See full index

Alevel Physics OCR A > particle physics > Flashcards

particle physics Flashcards

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

what did j.j thompson propose?

A

the plum pudding model
at atom ocntiamed negative electrojs embedded in a uniform sea of positive charged dough.

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

rutherford experiment

A

a narrow beam of alpha particles were targeted at a thing piece of gold. they scattered and each alpha particle hitting hte flourescemt screen produces a speck of light

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

Observation 1

A

mos of the alpha particles passed straqight through the fold with little scattering

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

observation 1

A

very few alpha particles were deflected

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

conculsions

A

most of the atom was made up of empty space and th emost of the mass was concentrated in a space regioon- the nucleus.

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

the more energetic a alpha particle was…

A

the closer it got toward the nucleus

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

Nucleon

A

refers to a proton or neutron

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

z

A

atomic numberA

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

A

A

nucleon number/mass number

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

isotopes

A

nuclei of the same elemetn that have the same number of proton but different number of neutrons.

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

Atomic mass unit

A

one twelfth the mass of a neutral carbon-12 atom.

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

what is the radius of an nucleus dependent on?

A

the nucleon number

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

what adoes strong nuclear force acts between?

A

nucleons

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

what is the attractive force about?

A

3fm

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

what is the replusive force about?

A

0.5fm

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

if an antiparticle and particle meet what happens?

A

they annihilate each other and convert inot a high energy pair of photon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is the charge and mass of a an antiparticle?

A

opposite charge of particle and same mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is the nitparticle of an electron?

A

positron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what is the range of stron nuclear forces?

A

very short ranged

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what is weak nuclear force?

A

responsible for radioactivity particulary beta decay.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what is the range for weak nuclear forces?

A

10-18

22
Q

what is electromagnetic forces?q

A

responsible ofr electricity and light.

23
Q

wha is experiences electromagnetic forces?

A

static/ moving charged particles

24
Q

what is gravitational forces?

A

binds us to the earth and orbits our planets.

25
Q

what is the range for gravitational forces?

A

Infinite range

26
Q

what are fundamental particles?

A

have no internal structure

27
Q

protons?

A

not fundamental particle made of quarks

28
Q

neutrons?

A

not fundamental particles made of quarks

29
Q

electrons

A

fundamental particle

30
Q

photon?

A

fundamental particle

31
Q

neutrinos?

A

fundamental particle

32
Q

leptons?

A

fundamental particleh

33
Q

what are hadrons?

A

any particle that contains quarks

34
Q

hat are hadrons affected by?

A

particles and antiparticles strong nuclear charge and if charged electromagnetic

35
Q

how do hadrons decay?

A

from weak nuclear chargee

36
Q

example of hadron?

A

proton, neutron and meson

37
Q

what are leptons not affected by?

A

strong nuclear forces

38
Q

what are leptons affected by?

A

gravitation, weak nuclear forces and if charged electromagnetic.

39
Q

quarks of a proton?

A

uud

40
Q

quarks of neutron?

A

udd

41
Q

what are baryons?

A

any hadron made with a combination of three quarks

42
Q

what are mesons?

A

hadrons made with a combination of quarksand antiquarks

43
Q

what is the charge and mass of neutrinos?

A

no mass or charge

44
Q

what are the three types of neutrinos?q

A

electron
muon and
tau

45
Q

what is produced in the emission of alpha radiation?

A

helium nuclei

46
Q

what is produced in the emission of beta radiation

A

electron or positron

47
Q

what is produced in the emission or gamma radiation?

A

high energy gamma rays

48
Q

what happens in beta minus decay?

A

neutron decays into prodton and eleycon and electron neutriono

49
Q

what does beta plus produce?

A

proton decays into neutron, positron and electron neutrino

50
Q

down quark decay

A

down quark–> up quark + electron + electron antineutrino

51
Q

up quark decay?

A

up quark–> down quark+ positiron+ electron antineutrino

Alevel Physics OCR A (24 decks)

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