4076069
Description
Mind Map by damianwalker, updated more than 1 year ago
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Created by damianwalker
over 8 years ago
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Physics - Key facts
- Radiation
- Isotopes
- Atoms with the same
proton number but
different nucleon
number
- Atoms with the same
proton number but
different nucleon
number
- Types
- Alpha
- Least penetrating,
stopped by paper and air
- Emits 2 protons
and 2 neutrons
- Least penetrating,
stopped by paper and air
- Beta
- Fast moving
electron
- Neutron breaks
down into a
proton and
electron
- Proton number goes up
- Electron gets
kicked out of
nucleus
- Proton number goes up
- Negative charge
- Stopped by
aluminium
- Fast moving
electron
- Gamma
- Electromagnetic wave
- Short wavelength
- High energy
- Most penetrating
- Stopped by
concrete and
lead
- Stopped by
concrete and
lead
- Electromagnetic wave
- Alpha
- Half-life
- Time it takes for half the
radio-active atoms to decay
- Time it takes for half the
radio-active atoms to decay
- Uses of
radioactivity
- Automatic thickness montoring
- radioactive tracers
- Radioactive dating
- Carbon dating
- Automatic thickness montoring
- Isotopes
- Equations
- Voltage = current X Resistance
Current = Voltage/Resistance
Resistance = Voltage/Current
- Power = Current(Squared) X Resistance
- Force = Mass X acceleration
- Voltage = current X Resistance
Current = Voltage/Resistance
Resistance = Voltage/Current
- Newton's law
- First law
- An object will not change its
shape, speed, position or
direction unless a force acts
upon it
- An object will not change its
shape, speed, position or
direction unless a force acts
upon it
- Second law
- The change in speed or
acceleration is
proportional to the force
applied
- The change in speed or
acceleration is
proportional to the force
applied
- Third law
- For every action there is
an equal and opposite
reaction
- For every action there is
an equal and opposite
reaction
- First law
- Other little facts
- Nucleon number on the top,
proton number on the bottom
- Nucleon number on the top,
proton number on the bottom
- Nuclear fusion
and fission
- Fusion
- Problems
- 1. High
temperature and
pressure needed to
start the reaction
- 2. Once the fusion
reaction has started - it
needs controlling and
containing
- 1. High
temperature and
pressure needed to
start the reaction
- Advatages
- 1.Hydrogen is the fuel for the
reaction - unlimited supply of
hydrogen from water
- 2. No radioactive waste
- 1.Hydrogen is the fuel for the
reaction - unlimited supply of
hydrogen from water
- Problems
- fission
- Fission reactor
- Graphite moderator - slows
the neutrons increasing the
chance of collisions with the
sources nucleus
- Thick concrete shield -
Contain radioactive
emissions
- Control Rods - Absorbs
neurons, in order to
slow down the chain
reaction, lift rods out to
speed reaction up
- Fuel Rods - source of
the reaction which
undergoes fission
- Graphite moderator - slows
the neutrons increasing the
chance of collisions with the
sources nucleus
- Diagram of fission
- Fission reactor
- Fusion
- Types of graphs
- Distance-time
- Velocity-time
- Distance-time
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