is10_sb_unit_d

Contents
10
11
12
Light is part of the electromagnetic spectrum
and travels in waves.
10.1 Light and the Electromagnetic Spectrum
10.2 Producing Visible Light DI
10.3 The Ray Model of Light
Ray diagrams model the behaviour of light in
mirrors and lenses.
11.1 Mirrors DI
11.2 The Refraction of Light
11.3 Lenses
Optical devices help us see farther and more
clearly than we can with unaided eyes.
12.1 Human Perception of Light
12.2 Technologies That Use Light DI
Unit Task
In this unit, you will learn about light, mirrors, and lenses
and many devices that use or produce light. For your unit
task, you will examine the design of streetlights. The
function of streetlights is to illuminate the ground, but they
waste light by also illuminating the sky. You will design a
shade to reduce the light pollution streetlights cause.
Essential Question
How can we effectively use the properties of light in
technological devices and procedures to enhance society?
375