Radiation Flashcards
The radiation that surrounds us all the time is called
Background radiation
There are 3 main types of radiation alpha beta and what
Gamma
Is it possibly to es
Thrhccndj d. Did
Beta radiation is ……………….…………… by magnetic and electric fields
Deflected
Alpha and beta particles have oppersite
Charges
Beta radiation is made of
Electrons
What’s the charge on a alpha particle
2
All types of radiation can
Harm cells
Can you predict when an atom will decay
No
Who invented the plum pudding model
J j Thompson
J J Thomson said that atoms were little circles with tiny things stuck inside them like a plum pudding what are the things
Electrons
Rutherford and marsden did what
Fired alpha particles into gold foil expecting them to be slightly deflected but they went straight through or came back at them
Rutherford and Marsden discovered that most of the
Mass was centred in a nucleus in the centre of the atom
Rutherford and marsden also showed that an atom was mostly
Empty space
An atom with the same number of protons but a different number of neutrons are called
Isotopes
As a result of being isotopes they have the same atomic number but a different
Mass number
Mass number is the number of
Protons and neutrons
Can you make something decay
No
Alpha beta and gamma are all what
Types of ionising radiation
How does The sun contribute to radiation
Cosmic waves
A small proportion of radiation comes from
Hospitals, nuclear power station fallouts and nuclear bombs
Radon gas is a huge
Background radiation source
What percentage of backround radiation comes from the nuclear industry
1%
Radon gas produces what percentage of radiation
51%
An alpha particle is the same as a
Helium nuclei
Alpha particles has
2 neutrons and 2 protons
Alpha particles have a mass of
4
Alpha has a charge of
+2
Alpha particles are big and
Heavy
Alpha particles can penetrate
Nothing they barely penetrate air
Because of there size alpha particles are
Very ionising they bash into a lot of atoms knocking electrons of them
Beta particles are in between
Alpha and gamma particles in there properties
Beta particles move .:. And are .:.
Quite fast and are small
Beta particles have a long range in
Air
Beta particles are ……… ionising
Quite ionising
For every beta particle released a
Neutron turns into a proton in the nucleus
A beta particle has what mass and charge
No mass and a charge of -1
When an atom decays it
Gives out gamma beta alpha radiation
Beta particles are
Electrons produced in the nucleus
Gamma radiation is a high
energy electromagnetic wave
Gamma radiation has no
Mass
Alpha and gamma radiation are both stopped
Before a meter of air is traveled
Gamma radiation goes .,…,.,.:;;., in air
Several meters
Alpha radiation is stopped by
Paper
Beta radiation is stopped by
Thin aluminium
Gamma radiation is stopped by
Many centimetres of lead
Gamma radiation is how ionising
Weakly ionising
Beta particles are how ionising
Quite strong
Alpha particles are how ionising
Very strongly ionising
