Front
Back
What is the charge of
an electron?
Soft Tissue
Which particle moves because
of friction to create statically
charged objects
Negative Charge
-1
Name a use of gamma
radiation
Only electrons move
What is the name of the tube
used to detect ionising
radiation?
Radiotherapy, killing
cancer cells
Name a use for beta
radiation
GM Tube
Geiger Muller tube
What happens to an object
got that has gained
electrons?
Measuring paper thickness
What is done in Radiotherapy
so that damage to living cells is
minimal?
It becomes negatively charged
Would you want a gamma source
used as a tracer in the body to have a
long half life or short half life?
The gamma source is rotated
with the tumour at the
centre.
What isotope is used to
date things that were
living?
Short half life so it quickly
disappears
What happens to an object
that has lost electrons
Radioactive Carbon
Half life = 5700 years
What are nuclear chain
reactions used for?
It becomes positively charged
What is frequency?
Power stations where the energy
heats water and Bombs
What charge does a
neutron have
The number of waves per
second measured in Hertz
What is the role of
a fuse?
Zero (neutral) charge
What is voltage?
To melt and break the circuit for
safety when the current is too
high
What colour is the
Earth wire?
The push that makes the
current flow, measured in
volts (v)
What type of wave is
ultrasound
Green and yellow
What charge does a
proton have?
A longitudinal
wave
What direction to the
particles move in a
longitudinal wave?
Which form of radiation, is
the largest and has a charge
of +2
What is the name for a
nuclear reaction the splits
uranium?
Positive Charge
+1
Side to side, do hand
movement
Alpha
4
He2
Why are paint
droplets charged?
Nuclear Fission
What is the name for a nuclear
reaction that joins together
light nuclei?
So they repel each other and
spread out to give an even
coat
Why is ultrasound
safer then x-rays?
Nuclear Fusion
What do like charges do
(objects with the same charge)?
It does not harm living cells by ionising
them and causing cancer like x-ray and
gamma does.
What is half life?
Repel
What can radiation do to
living cells?
The time taken for half the
radioactive nuclei to decay
What do opposite charges
do?
The cell can absorb the
radiation and become
ionised
Name a use for alpha
radiation
Attract
Do precipitation plates in a chimney have
the same charge or opposite charge to
the smoke particles?
Smoke alarms
What does a defibrillator
do?
Opposite, so the particles are
attracted to the plates and don't
cause pollution
What can ultrasound image the
X-rays cannot?
It uses a big charge to create a
shock and restart a patients heart