Changes in Energy Storage in Systems

Changes in Energy Storage in Systems

Learning Objectives

At the end of the lesson you will understand how energy is stored and transformed in different systems.
At the end of the lesson you will be able to calculate the kinetic energy of a moving object using the given equation.
At the end of the lesson you will be able to calculate the elastic potential energy stored in a stretched spring using the provided equation.

What do you already know about energy storage and transformation in different systems?

Energy Transformations in a System

When a system changes, the storage and transformation of energy can take various forms.

Calculating Kinetic Energy

Kinetic energy, Ek: The energy of a moving object, which can be calculated using the equation Ek = 0.5 * m * v^2.

Calculating Elastic Potential Energy

Elastic potential energy, Ee: The energy stored in a stretched spring, calculated as Ee = 0.5 * k * e^2.

Examples of Energy Changes in Systems

Rockets, trolleys, skydivers, cars, boiling water - all involve energy transformations.

Summary of Learning Goals

Understand energy storage and transformation in different systems.
Calculate kinetic energy of a moving object.
Calculate elastic potential energy stored in a stretched spring.

Key Definitions

System: An object or group of objects considered for energy analysis.
Kinetic energy, Ek: The energy of a moving object, which can be calculated using the equation Ek = 0.5 * m * v^2.
Elastic potential energy, Ee: The energy stored in a stretched spring, calculated as Ee = 0.5 * k * e^2.
Spring constant, k: A factor that describes the stiffness of a spring, measured in Newtons per metre (N/m).
Extension, e: The length by which a spring is stretched or compressed from its original length, measured in metres (m).

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.