1. Convex and Concave Lenses

2. PREDICT!
Predict: What will happen to the light as it goes through the CONCAVE lens?
What will happen to light as it goes through a CONVEX lens?
Draw a picture!

3. Observe:
Supplies:
Convex Lens (draw / label it)
Concave Lens
Flashlight
Draw what happens as light goes through each lens. Did it match your prediction?

4. Explain!! Why does this happen? Is it reflection? Refraction? Both?
LABEL YOUR DIAGRAM!!!

5. Concave Lens!

6. Notes: Focal Point: The point where the refracted light rays converge
Notes: Focal Point: The point where the refracted light rays converge. Where is it?

7. Convex Lens: Where is the Focal Point?

8. Concave Lens: Is there a Focal Point?

9. Questions to answer:
What’s the difference between a LENS and a MIRROR?
What’s the difference between a CONVEX and CONCAVE lens?
3. Explain WHY your reflection is upside-down in a CONCAVE MIRROR (draw a picture).

10. Compound Lenses
ON THE BACK OF YOUR PAPER; Draw a diagram of a compound lens.
Predict: What happens as light goes through it?
Observe: What really happened?
What’s an example of a compound lens?

11. Lenticular lenses: Used on special TV screens. What do they do?

12. Lenses and Technology!  3D without glasses!

13. Convex and Concave Mirrors!
Look at your reflection in both sides of the mirror.
What does your reflection look like?
Why does this happen? – More details tomorrow!