Download P4 revision sheets

What is background radiation?
Where does it come from?
What are XRays used for?
How are X-Rays produced?
How are x-rays and
gamma rays similar?
What are gamma rays used
for?
How are x-rays and gamma rays
different?
What is a medical tracer?
Why do scientists not believe that “cold
fusion” was correct?
What is a chain
reaction?
Name two nuclear fuels.
What is “peer
review” and why is
it necessary?
Where does nuclear fusion happen?
What is nuclear fusion?
What is nuclear fission?
Why are researchers working so hard to
make nuclear fusion reactors work?
How is a chain reaction controlled in a nuclear power
station?
Why does rubbing an insulator cause it to become charged?
What is the relationship
between current, voltage and
resistance?
How can static charge be
useful?
Describe how emitting
an alpha particle then a
beta particle affects
the nucleus of an atom.
What are the possible
dangers from static charge?
Explain how one danger can
be controlled.
How does an electrostatic precipitator work?
The voltage across a 6 resistor is 24V
Calculate the current in it.
What are the names and
colours of the wires in a UK
3-pin plug?
What is half life and how can it be
used to find out how old something
is?
Explain how the earth wire prevents
electric shocks.
What are the three types of
radioactivity?
What is an alpha particle and why
is it the most ionising type of
radioactivity?
How does an ultrasound scanner work?
What is ultrasound?
Give an
example of a
longitudinal
wave
What are the units
of…
potential difference
current
charge
resistance
power
Why are circuit
breakers better than
fuses?
What is the relationship between
power, current and voltage?
Draw and label a longitudinal wave.
Key words: compression, rarefaction, wavelength
What can it be used for?