1. Thermal Energy and Heat
Sc.7.n.1.1
Sc.7.p.11.1 Sc LA

2. What is thermal energy
Thermal energy is the total kinetic energy of all particles in a substance.

3. What is the difference between Thermal energy and temperature
Thermal energy is the total amount of kinetic energy from all particles
Temperature is the average kinetic energy in a substance

4. Cold does not exist. It is the absence of heat.
What is the heat
Heat is energy transferred from an object at a higher temperature to an object with a lower temperature.
Cold does not exist. It is the absence of heat.

5. How is heat measured?
Calories
(cal)
A calorie is the amount of energy it takes to raise the temperature of 1 gram of water 1 degree Celsius
Joules
A joule is the unit for measuring energy. 1Joule=4.18 Calories
Heat is measured in two ways

6. How is heat related to thermal energy
Heat and thermal energy are not the same.
Heat always moves from objects with higher energy to those with lower energy until both equalize.

7. How can the heat affect the state of an object
The state of molecule depends on the amount of heat an object has.
Solid
Liquid
Gas
Heat

8. Heat Transfer
There are three ways heat is transferred:
Conduction
Convection
Radiation

9. What is conduction ?
Conduction is the transfer of energy as heat from one substance to another via direct contact.

10. Conduction Some materials transfer kinetic energy better than others
A material that transfers heat well is called a Conductor
Metals are good conductors. For example, you wouldn’t want to pick up a pan from the oven without oven mitts because the pan heats up quickly and could burn you

11. conduction , An Insulator is a material that is a poor conductor.
Energy does not transfer through these objects very well so the heat energy is trapped inside of it. Ex: Glass and rubber

12. What is Convection?
Convection is the transfer energy as heat by movement of liquid or gas.

13. What is radiation?
Radiation is the transfer of energy by electromagnetic waves.