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Click on the leaves in the correct order to spell the words.
The game will count down from 400 seconds.
You will lose 5 seconds for each incorrect letter.
Words:
gamma
ray
penetrate
radioactive
decay
unstable
ion
frequency
ionising
ionisation
Geiger-Muller
tube
half-life
contamination
gamma
ray
penetrate
radioactive
decay
unstable
ion
frequency
ionising
ionisation
Geiger-Muller
tube
half-life
contamination
Score: 400
Wrong! - 5 points
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