introduction to heat

• Natuurkunde
• Middelbare school
• havo, vwo
• Leerjaar 2

Chapter 5: Heat

Planning:

- Mindmap

- Heat and temperature

- Specific heat

- Read 5.1 and start with the even exercises.

Heat

Heat and temperature

- Temperature is the speed of a molecule at micro level

- Temperature does not depend on the amount of molecules moving

- Heat is the total energy gained from the movement of multiple molecules at micro level

At the macro scale the difference between heat and temperature is the amount of substance involved.

Specific Heat 

This is the amount of energy that is needed to heat one kilogram of material by 1 degree. 

Read paragraph 5.1

And do the even exercises.

What can heat be used for?

Energy types

Heat is one of the types of energy, some of the others are:

Kinetic energy (movement)

Chemical energy

Electricity

Give an example how you can get heat from kinetic (movement) energy

Give an example how you can get heat from chemical energy

Give an example how you can get heat from electrical energy

Give an example how you can get kinetic energy from heat

Give an example how you can get electrical energy from kinetic energy

Energy is never lost

Energy can be changed from one type to another

Energy is never lost, it can however become a type of energy which is not useful to the user (ex. a lightbulb becoming hot instead of using all of the energy only to send out light)

Some energy conversions are easier then others. It is relatively easy to convert other types of energy into heat.