Nuclear Fusion (AQA GCSE Physics): Flashcards
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What is nuclear fusion?
What is nuclear fusion?
Two small nuclei collide and join to form a larger nucleus
Common example of nuclear fusion
Common example of nuclear fusion
Two types of hydrogen fuse together to form helium
How does fusion nucleus mass compare to original nuclei?
How does fusion nucleus mass compare to original nuclei?
Slightly less mass than sum of original two nuclei
What happens to missing mass in fusion?
What happens to missing mass in fusion?
Converted to energy
Form of energy released in fusion
Form of energy released in fusion
Gamma rays
Conditions required for nuclear fusion
Conditions required for nuclear fusion
Very high temperatures and pressures
Can fusion generate electricity currently?
Can fusion generate electricity currently?
No, scientists haven't found a way to use it yet
Natural example of fusion reactor
Natural example of fusion reactor
The sun
Fusion efficiency vs. fission
Fusion efficiency vs. fission
Fusion would be much more efficient than fission
Why are fusion reactors difficult to build?
Why are fusion reactors difficult to build?
Require very high temperatures & pressures, expensive
Has fusion achieved positive net energy on Earth?
Has fusion achieved positive net energy on Earth?
No design has accomplished this yet