Understanding Light

Which of the following is an example of a natural light source?

• The sun

• A torch

• A match

• A lamp

What is required for artificial light sources to produce light?

• Water

• Sunlight

• A supply of energy

• Natural elements

How does light travel?

• In a zigzag pattern

• In a circular motion

• In a straight line

• In a random path

Why is it important to understand how light travels?

• To understand how objects are seen

• To know how to create light

• To change the color of light

• To measure the speed of light

What device uses mirrors to allow viewing of objects not in direct sight?

• A telescope

• A microscope

• A periscope

• A camera