1. MIMTY 4/5/11 A lot of scientific articles in newspapers have bias. What is bias and why do you think it’s bad? MIMTY

2. Summarizing Notes notes Take the next 5 minutes and do the following: 1) Summarize your notes from yesterday in a paragraph. 2) Create 3 questions you could ask about these notes. Your questions should use verbs from the following parts of your verb sheet: - 1 question using “knowledge” or “comprehension” - 1 question using “application” or “analysis” - 1 question using “evaluation” or “synthesis”  1 more question using “synthesis”

3. Reflection and Refraction Review Which diagram below shows the proper path that light will take? A)B) C)D) E) none of the above

4. Reflection and Refraction Review How many real mirrors are there in this room? After clicking in, write down how you know. A) 0 B) 1 C) 2 D) 3 E) 4

5. Reflection and Refraction Review Below is a fiber optic cable. Light is shined into one end and comes out the other. What principle allows these to work? A) Incidence B) Reflection C) Refraction D) Imaging E) Focal Point

6. Reflection and Refraction Review What kind of image does the projector make on a drive in theater? A) Imaginary B) Object C) Virtual D) Optical E) Real

7. Reflection and Refraction Review Which image below shows the proper way of drawing a ray trace diagram? A)B) C)D) E) none of the above

8. Reflection and Refraction Practice Problems 1)A beam of incident light hits a mirror at an angle of 32.547°. What is the angle of the reflected light? 2) A butterfly at eve level is 20 cm in front of a mirror. You are behind the butterfly, 50 cm from the mirror. What is the distance between you and the image of the butterfly? 3) Suppose you walk toward a mirror at 2 m/s. How fast do you and your image approach each other? (the answer is not 2!) 4)The flashlight will only illuminate one of the cards shown at right. Determine which one. 5)Copy and complete the ray diagram shown to the right.  A few slides ago, we saw a picture of a room with mirrors that seemed to go on forever. The light bulb in the room doesn’t produce infinite light, so how does it let us see infinite images?  Semi trucks often have signs on their bumpers that read “If you can’t see my mirrors, I can’t see you.” Explain the physics behind why this is true. classwork

9. Exit Question #28 How do glasses work to correct vision? a) They gather more light into the eye. b) They allow less light into the eye. c) They bend the focal point so it hits the back of the eye. d) They bend the focal point so it hits the front of the eye e) They spread the light so it hits across the whole eye. f) None of the above.