What i learned in this unit is that heat is a transfer of a from a warmer object to a cooler object. The next thing I learned is that conduction is a transfer by direct contact. The last thing I learned is that convection. Convection is by the mass motion molecules. What I like best about the unit is doing the labs. The least thing I like about this unit is that I really didn't like how we learned about convection and condution. How do cars get their heat?