Lesson 5

Experimenting with the length of shadows (optional)

Experimenting with the length of shadows (optional)

Overview

Throughout this lesson series students will be introduced to how light can create shadows. Students will compare shadows from point and extended light sources such as torches and fluorescent tubes. Students will conduct experiments to see how light sources cause shadows and how the length of shadows can be changed. Students will draw diagrams of shadows by drawing rays to show that light travels in straight lines.

ACS Codes

ACSHE081 ACSHE083 ACSIS086 ACSIS087 ACSIS090 ACSIS091 ACSIS093 ACSIS218 ACSIS231 ACSSU078 ACSSU080

Lesson Objectives

Students will:

  • Investigate the importance of fair testing and how to choose variable to change and remain constant.
  • Investigate the effects of shadows on solar panels and their effectiveness.
  • Explain how shadows and low light effects the use of the schools solar panels.

Evidence of Learning

Can the student:

  • Explain fair testing.
  • Explain how solar panels can be affected by shadows by making reference to observations.
  • Draw diagrams using rays.

Example Learning Sequence

  • Explore how shadows can affect the use of the solar panels. (observe the panels during the day to see when they are in shade and explore how this affects the generation of electricity)
  • Draw diagrams of their observations and make measurements of the length of shadows