What are the 4 fundamental forces?
Gravity, electromagnetism, strong nuclear force, weak nuclear force
What is gravity?
Strength of attraction two objects have depending on their mass and distance
What is nuclear fusion?
Joining two smaller nucleases
What is nuclear fission?
Splitting one atom
What are the requirements for nuclear fusion?
High temps and high pressures
Do stars use nuclear fusion or fission to produce their energy?
Nuclear fusion