2. Mirror – a shiny object that reflects light instead of letting the light go through.

3. A reflection off a smooth surface.

4. A reflection off a rough surface.

5. “angle of incidence equals the angle of reflection.” A plane mirror is a mirror that is flat and smooth and creates an image that is upright and reversed.

6. A convex mirror is a mirror that is curved outward and makes the image upright and smaller.

7. Used for – Side-view mirrors Surveillance mirrors in stores

8. A concave mirror is a mirror that curves inward. From far away the image will appear upside down. Close up, the image will appear larger and upright.

9. Used for – lighthouses car headlights

11. Lens – an optical tool that is transparent and refracts light as it passes through it.

12. A convex lens is a lens that curves outwards and refracts the light inward to bring the focal point forward.

13. Convex lenses can be used to fix far-sightedness by bringing the focal point forward onto the retina.

14. A concave lens is a lens that curves inwards and refracts the light outward to push the focal point back.

15. Concave lenses can be used to fix near-sightedness by pushing the focal point back onto the retina.