• describe radioactive decay

• list some of the sources of background radiation

ü

• understand the meaning of the term half-life

• be able to  determine half-life from a graph of activity against time

 

 

Task 1 - Nature of radioactive decay

Presentation

The three types of radioactive decay are .....................................

Atomic nuclei decay because they are .....................................

.................... decay involves a loss of two ............... and two ....................

.................. decay involves a ................... splitting to form a proton and an ...............

The .......................... is ejected from the nucleus as a .............. particle.

....................... decay involves the nucleus losing energy by emitting a .............. wave.

 

 

 

Task 2 - Defining and measuring half-life

Definitions and demonstration of half life