What happens when light hits a surface?


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
You have looked at various materials light can interact with (transparent, translucent, or opaque). The way that light moves when it hits these materials is also very interesting. When we show the movement of light, we use an arrow to represent the direction the light is travelling. 

Light can pass through an object, light can bounce off an object or be absorbed, and light can also bend. 

Video

Watch this ADLC Digital Lesson on Bending Light.