Feb
20
Written by:
Stephen Pegler
Wednesday, February 20, 2008
Today and Thursday we will be going over last week's activities and learning how to draw lens and mirror diagrams. The homework packet is due next Monday. There will be a test on Friday, February 29. The students will have short essay questions. I will have a list of these online by the end of the week. Next week will include some activities with lenses and mirrors.
My Wednesday Workshop has been on magnets and magnetic fields this round. We have two more sessions to go. My last round will probably involve electromagnets.
Test questions for Friday, February 29
Light exam questions
Some questions will be worth more than others. Six, seven, and nine for example, will be worth twice the others. The students will have to answer a certain number of questions for a certain number of points. They should prepare by studying for all the questions.
1. Explain how refraction works and give an example.
2. Is it possible to hear sounds in outer space? Why or why not? Include the use of the word medium.
3. Explain how polarized light works and why polarized sunglasses are useful.
4. Explain how sound and light waves are similar and different.
5. What is the relationship between wavelength and frequency? Explain and draw sketches to illustrate your points.
6. What are the three types of mirrors? How are they similar? How are they different? What is the type of image that each produces? Draw sketches of each and show how light travels relative to each.
7. What are the two types of lenses? How are they similar? How are they different? What is the type of image that each produces? Draw sketches of each and show how light travels relative to each.
8. Explain how a prism works, and why laser and LED light are not split into more light waves with a prism. How are laser and LED lights different and similar?
9. How are the primary colors of light and pigment similar and different? Explain what each are, and how they combine to form new colors. What happens when all three are added together? What are the two additive processes called?
10. Distinguish among opaque, translucent, and transparent.
11. What is the relationship between wavelength in the e-m spectrum and energy?
12. What are the major parts of the e-m spectrum in order, and what are some uses for each?
13. How are magnets used to create electricity?
14. How do magnets get their magnetic field? How can they be damaged or destroyed?
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