1. 10/23 & 10/24 - 7 th Grade Agenda Collect: Reading & Note Taking : p. 49 - 52 Optical Tools Mirror Lab Video: Eyewitness Vision Class Reading: p. 46 – 49 & 62 - 64 HW: Reading Guide Chap 2 & Section 2 Reminder Chap 2 Test on 10/21 & 10/22

2. Reflection What is the difference between Rods and Cones cells in your eye? (write in complete sentence)

3. Parts of the Eye

4. Image is projected up_______ down. Left eye sends the image to the r____ side of the brain. Right eye sends the image to the l____ side of the brain. side ight eft

5. Rods and Cones Rods responds to lig______ Cones respond to co_____ ht lor

6. Nearsightedness

7. Farsightedness

8. Lasik Operation Reshapes the cornea

9. Galileo’s Telescope He was the first man to observe the moons of Jupiter and craters on the moons with a telescope in 1608

10. What is a Refracting Telescope? A telescope that uses convex lenses to gather a large amount of light onto a small area

11. What is a Reflecting Telescope? A telescope that uses mirrors to focus a large amount of light onto a small area

12. What is the difference between refracting and reflecting telescope?

13. What is a Radio Telescope A telescope that uses curved, reflecting surfaces to concentrate faint radio waves from outer space onto small antennas

14. Four views of the Crab Nebula using different telescopes

15. Microscope A Microscope uses a combination of lenses to form enlarged image of tiny objects

16. Electron Microscope Electron microscopes uses electrons instead of light to produce a magnified image

17. More Optical Illusions

18. Stare at this for 20 seconds & then stare at a blank piece of paper

19. Which center circle is larger

20. Are they moving?

23. Reflection How does an image appear in a concave mirror? How can you make the image appear upside down in a concave mirror? How does an image appear in a convex mirror?