Energy changes in a system, and the ways energy is stored before and after such changes

Energy changes in a system, and the ways energy is stored before and after such changes

Learning Objectives

At the end of the lesson you will be able to describe the changes in energy storage when a system undergoes a change. At the end of the lesson you will be able to calculate energy changes in a system due to heating, work done by forces, and work done when a current flows.

What do you already know about energy changes in different systems?

Definition of a system in terms of energy changes

System: An object or group of objects where energy changes occur.

Examples of energy changes in different systems

Object projected upwards, moving object hitting an obstacle, object accelerated by a force, vehicle slowing down, water boiling in an electric kettle.

Calculating energy changes due to various factors

Consider effects of heating, work done by forces, and electrical work.

The relationship between work done and current flow in a circuit

Current Flow: Movement of electric charge resulting in work done and energy transfer in a circuit.

Energy Stores

Different forms in which energy can be stored in a system, such as kinetic, thermal, chemical, or potential energy.

Work Done

Process of energy transfer when a force moves an object over a distance.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.