Introduction

INTRODUCTION

This unit consists of two lessons covering how light travels, the formation of shadows, how the size and shape of a shadow can be changed, reflection of light and how the principle of light reflection is applied in everyday life.

Learning Outcomes:

1.   How light travels.

2.  How shadows are formed and the factors that cause the size and shape of a shadow to change.

3.  The reflection of light, ray diagram and the uses of the reflection of light in everyday life.

We are grateful that God created the. Sun, light from the Sun travels to the Earth and Enables us to see things. How does light travel? At night, we need candles, torches or electric lamp to give us light. When we

stand facing away from the Sun, we see our shadows on the ground in front

of us. What is a shadow? How does it form?