Nuclear Fusion

Question 1

Fusion

Answer 1

smaller nuclei forming a larger nuclei
opposite of nuclear fission

Question 2

Why is the mass of the larger nuclei slightly less than the total mass of the smaller nuclei before fusion

Answer 2

because some of the mass is converted into energy

Question 3

Source of energy for stars

Answer 3

Hydrogen nuclei fuse to form Helium nuclei
some of the mass from the fusion is let off as a gamma ray (large amount of energy)

Question 4

Electrostatic repulsion

Answer 4

High temperatures to increase speed of nuclei with same charge as they will repel so with high speed their momentum will force them together

Question 5

Conditions for a fusion reactor to be successful on our planet

Answer 5

Higher temperature than the sun
High pressure is difficult to produce on Earth so higher temperature needed

Question 6

Why is power produced from Fusion unlikely

Answer 6

Experimental reactors have not been able to produce more energy than what is put in
It is difficulty to sustain high temperatures and pressures within the reactor