Well, it's called conduction! Conduction is when heat is transferred from one object to another by touch! There is also insulators. Insulators are substances that conduct heat well, like this metal pot.
There is also Convection! That is when heat is transferred in currents through a liquid. It's like this cup of water.
If I put it on the stove, the stove's kinetic energy will transfer into the water atoms, and the bottom part of the liquid's temperature will warm up and rise to the top. Then, when them atoms gets cold it will fall back down, like a cycle. It will continue to do that until it is taken off the stove.
Finally, there is Radiation! Radiation is when heat is transferred by waves. There is also terrestrial radiation. That is when radiant energy is emitted by the Earth, then the sun emits it back.
Okay, now I get it! Conduction is when you dirctly touch something. Convection is when heat is transfered is currents through a liquid. Radiation is transfered through waves!
Oh, I get it!!
Do you see this lightbulb? Well, this lightbulb is an example of radiation. It absorbs heat from the air around us, then emits it back to us!