How can we use light to classify objects as transparent, translucent, or opaque?


Targets
At the end of this unit, you should be able to answer the following questions:

1. Where is light found in our world? (sun, electric lights, objects that glow)

1.1 What objects emit their own light? What objects need a light source to be seen?

1.2 How is looking at the sun or bright light dangerous?
2. How does light interact with other materials?

2.1 How can we use light to classify objects as transparent, translucent, or opaque?

2.2 How do objects create shadow?
3. How does light travel?

3.1 What happens when light hits a surface? (absorbed, reflected, or refracted)

3.2 How can light be broken into colours or combined to make a new colour?

3.3 How do various optical devices work?
Targets
Your everyday observations give you ideas of the materials light might pass through. You know light will pass through windows and it will not pass through walls. You will extend this knowledge to explore how light interacts with other everyday objects so that you can classify them as transparent, translucent, or opaque.