1. Reflection S4P1 Students will investigate the nature of light using tools such as mirrors, lenses, and prisms. Investigate the reflection of light using a mirror and a light source.

2. Question When you look at my face, it is easy to see, You’re looking at you, when you’re looking at me! What am I?

3. Answer A mirror!

4. How does light travel? Light waves REFLECT, or bounce, off the surfaces of most objects.

5. How does light reflect? Angle of incidence Angle of reflection The ‘angle of reflection’ is always equal to the ‘angel of incidence’. on off

6. Light can only be reflected in straight lines. Light can only be reflected in straight lines. on off

7. Reflection of Light Reflection of Light Reflection occurs when a wave bounces back after striking a barrier. Reflection occurs when a wave bounces back after striking a barrier. Example: a reflection in a mirror. Example: a reflection in a mirror.

8. REFRACTION ä Light waves REFRACT when they move from one transparent material to another, such as from air to glass or to water. ä TO REFRACT IS TO BEND. TO BEND.

9. Essential Knowledge, Skills, and Processes ä Compare and contrast reflection and refraction Reflection Refraction

10. Vocabulary ä Reflection: the bouncing of light from a surface ä Refraction: the bending of light as it passes through one material to another

11. Review ä Explain the terms transparent, translucent, and opaque, and give an example of each. Plastic wrap Wax paper Aluminum Foil Transparent Translucent Opaque

12. Vocabulary ä Transparent: materials that allow all light to pass through ä Translucent: letting light through but scattering it ä Opaque: materials that do not let light through ä Transmit: to send (as in sound or light). It also means light passing through an object.