1. {
NEW UNIT
NUCLEAR POWER
 

2. What are the different types
of nuclear radiation?
+
+ +
+
+
+
particle
As an unstable nucleus emits a particle or ray,
it changes. This process is called radioactive
decay.
ray

3. As unstable atoms break
down, the level of
radiation falls
Unstable (radioactive atom)
Stable (decay product)
Radiation


4. Types of emission
Radioactive source
paper
aluminium
lead
α particle
β particle ɤ ray