Previous ………. Next Topic >

Work and Energy (part 1)

Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d).


Lesson 1 (or “Day 1”) Material
Lesson 2 (or “Day 2”) Material
Lesson 3 (or “Day 3”) Material
Lesson 4 (or “Day 4”) Material

3:55 Momentum

2:23 Force, Work and Energy for Kids

4:38 Potential and Kinetic Energy for Kids

1:35 Units of Measure – Introduction

 


Compare Contrast and Debate

Background: The use of words is important. In science, the consistent use of words helps clarify concepts. But sometimes, words used in science are very similar (even identical) to words used in every-day language. In physics, for example, the expressions “momentum”, “force”, “work”, and “energy” each have a very specific meaning. In every-day language, people use these words also – but often the meaning of the words in every-day language are different than the meanings when used in physics.

  • Position A: Scientists should invent their own words rather than use words from every-day language. This way, less confusion would take place.
  • Position B: Using words that are familiar to people already – such as “work” and “force” – are appropriate to use in science. This approach makes science easier to understand, even if the meaning of the words vary a little bit.

Resources Documents and Links


Special Notes and Notices

Instructor Emphasis:

  • Science & Engineering Practice: Obtain, evaluate, and communicate information.
  • Cross-Cutting Concept: Energy and Matter: Flows, cycles, and conservation.
Standards Concepts
  • Energy can be transferred from one system to another (or from a system to its environment) in different ways: by conduction, mechanically, electrically, or by radiation (electromagnetic waves).