Which is the correct sequence of transferring heat through convection?
1. As a result, the heated part becomes less dense or lighter.
2 The colder air above us is denser and heavier so it goes
down and pushes the hot air upward.
3 The cold air is pushed upward by colder heavier air above. In
this way, the entire liquid or gas becomes evenly heated.
4 When liquid or gas is heated the molecules of the heated part
move faster and faster away from each other.​