Physics-Nuclear

  • Created by: JamieH98
  • Created on: 05-04-13 12:54
Name three types of nuclear particles?
Alpha, beta and gamma
1 of 29
What are their charges and what do they consist of?
Alpha-positive-2protons,2neutrons Beta-negative-an electron Gamma-zero-Em wave
2 of 29
What are their penetrations?
Alpha-4cm of aim-sheet of paper will stop it Beta-40cm of air-mm of aliminium will stop it Gamma-Km of air-cm lead will stop it
3 of 29
What are these types of radiation made by?
These types of radiation are made by the nucleus of an atom
4 of 29
What happens if an electron is unstable?
If an electron is unstable an electron of alpha, beta or gamma will come out
5 of 29
What is ionisation?
When an electron is added or removed it is called ionisation
6 of 29
What does a geiger tube do?
A geiger tube detects radiation
7 of 29
Name an experiment which detects radiation?
An experiment that detects radiation is the cloud chamber experiment which is done in a vaccume
8 of 29
What can radiation appear on and why?
Radiation can appear on photographic film as it is light reactive
9 of 29
What happens if people come in contact with radiation?
• Nuclear radiation may cause ionistation of the DNA in cells; this may cause the cells to- be repaired, die or become cancerous
10 of 29
What happens if you receive a large dossage of radiation?
• Anyone who receives a large dosage of radiation may have so many cells killed that they are unable to function properly- radiation sickness
11 of 29
What happens if you receive a smaller dose of radiation?
• Smaller doses may lead to an increased chance of a cancer developing
12 of 29
What is an isotope?
• An isotope is and atom with different amounts of neutrons in the nucleus
13 of 29
What is decay?
Decay is the change from one thing to another releasing energy
14 of 29
Name four sources of background radiation?
Sources of background radiation are: radon in the air, cosmic rays from space, radiation from rocks and in air and medical radiation
15 of 29
What is activity measured in?
Activity is measured in decays per second
16 of 29
What is a bequerelle?
1Bq=1 decay per second
17 of 29
What is the fuels role in the nuclear reactor?
The fuel in a nuclear reactor transforms nuclear energy to heat energy
18 of 29
What does the moderator do?
The moderator slows the neutrons down
19 of 29
What do the control rods do?
The control rods absorb neutrons
20 of 29
What does the collant do?
The coolant is to transport heat from the cove to the boiler
21 of 29
What does the containment vessel do?
The containment vessel is to prevent radiation escaping
22 of 29
What is nuclear fission?
• Nuclear fission is were nuclei of an unstable isotope split when they are struck by neutrons from other fissioning atoms
23 of 29
What is a chain reaction?
A chain reaction is when a nucleus already divided by nuclear fission's neutrons hit other neighbouring atoms causing their nucleus to split and this happens again and again
24 of 29
The advantages and disadvantages of nuclear power?
• The disadvantages of nuclear power is that there is a risk of accident and nuclear waste is harmful to humans and will remain active for thousands of years
25 of 29
How does a geiger counter work?
• A geiger counter works by when a nuclear tadiation enters the tube I causes ionisation which allows a small currrent to pass. A counter counts each passage of the current
26 of 29
What is the ionisation desity in alpha like?
Ionisation density- in alpha: very dense
27 of 29
What is the ionisation density in beta like?
In beta- bit less dense
28 of 29
What is the ionisation density like in gamma?
In gamma- spread everywhere no dense at all
29 of 29

Other cards in this set

Card 2

Front

What are their charges and what do they consist of?

Back

Alpha-positive-2protons,2neutrons Beta-negative-an electron Gamma-zero-Em wave

Card 3

Front

What are their penetrations?

Back

Preview of the front of card 3

Card 4

Front

What are these types of radiation made by?

Back

Preview of the front of card 4

Card 5

Front

What happens if an electron is unstable?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »