Nuclear Fusion (Edexcel GCSE Physics): Flashcards
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What is nuclear fusion?
What is nuclear fusion?
Two small nuclei collide and fuse to make a larger nucleus
Common example of nuclear fusion
Common example of nuclear fusion
Two types of hydrogen fuse to form helium
How does mass of fused nucleus compare to original nuclei?
How does mass of fused nucleus compare to original nuclei?
Slightly less than the sum of the original two nuclei
What happens to lost mass in fusion?
What happens to lost mass in fusion?
Converted to energy
Form of energy released in nuclear fusion
Form of energy released in nuclear fusion
Gamma rays
Conditions required for nuclear fusion
Conditions required for nuclear fusion
Very high temperatures and pressures
Natural example of a fusion reactor
Natural example of a fusion reactor
The sun
Fusion efficiency compared to fission
Fusion efficiency compared to fission
Much more efficient way of producing energy
Can fusion currently generate electricity?
Can fusion currently generate electricity?
No, scientists have not found a way yet
Why fusion reactors are difficult to build
Why fusion reactors are difficult to build
Require very high temperatures and pressures, and are very expensive
What fission and fusion extract energy from
What fission and fusion extract energy from
Nuclei
Net energy from fusion reactors on Earth
Net energy from fusion reactors on Earth
No design has achieved positive net energy yet