8 describe the features of the sky chart that was

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8. Describe the features of the sky chart that was distributed in class. What does the outer circle represent? How should the chart be oriented when you are looking in a certain direction, e.g. North? 9. Describe how the pointer stars in the Big Dipper are used to find Polaris. 10. Explain what actually moves outward with a water wave that is generated by dropping a pebble in a pond. 11. What is electromagnetic radiation? What effect does it have on electrons? 12. What is the physical significance of the speed of light? 13. Define the terms wavelength, frequency, and amplitude.
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A105, Prof. Cohn, First Semester 2012-13 2 14. Suppose that ocean waves travel at 2 meters per second. If the wavelength is 4 meters, what is the frequency of the waves? 15. What is a nanometer (nm)? 16. What is the approximate range of wavelength for visible light? 17. What is meant by “near infrared” and “near ultraviolet”? 18. What is a photon? What are its properties? 19. For what type of radiation is the particle-like nature least apparent? For what type is it most apparent? 20. Describe the difference between a transverse wave and a longitudinal wave. Give examples of both types of wave.
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