Discussion Questions

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Discussion Questions

Discussion Questions1. The primary purpose of building larger opticaltelescopes on the Earth’s surface is toa. increase the light-gathering power.b. increase the magnification.c. improve the resolution.d. allow a wider range of wavelengths to be viewed.2. Why was the Hubble Space Telescope placed in orbit?a. Maintenance on the telescope is easier to do in Earth orbit than on theEarth’s surface.b. To be closer to the starsc. To eliminate the distorting effect of the Earth’s atmosphered. To detect X-rays, which cannot penetrate the Earth’s atmosphere


3. How long does it take light to travel 3 ! 10 8 m?a. 1 yearb. 8 minutesc. 1 minuted. 1 second4. A light source has a frequencyof 2 ! 10 5 Hz. What is itswavelength?a. 0.67 ! 10 "3 mb. 1.5 ! 10 3 mc. 6 ! 10 13 md. 0.16 ! 10 "13 m5. A light source has a frequencyof 2 ! 10 13 Hz. What region of theelectromagnetic spectrum is it in?a. Gamma rayb. Ultravioletc. Visibled. Infrarede. Microwave

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