1. Place Heat Transfer Article on Page 98 (Old) & Page 40 (New)

2. Heat Transfer
Heat move from areas of higher temperature to areas of lower temperature.
There are 3 different ways that heat can move—conduction, convection and radiation.
Insulators prevent the transfer of heat and conductors transfer heat quickly.

5. Conduction
In order for conduction to happen, two objects must be in contact.
The heat travels from the warmer object to the colder object.

6. Convection
Convection is the transfer of heat through moving air or fluids.

7. Convection occurs because there is a density difference that results from a temperature difference.
Colder substances are more dense and drop and warmer substances are less dense and rise.
This creates a convection current of warmer air or fluid that carries heat to the colder area or object.

8. Radiation
All objects with a temperature above absolute zero give off radiant energy.
This radiant heat can move over distance whether or not there is a medium.
So, the energy source doesn’t need to touch the object it is heating.
This is why the Earth can be heated by a sun that is 107 million kilometers away.

9. Draw on the paper provided
Types of Heat transfer Tree Map
Use the reading to complete the tree map.