Question 1 In this essay, you will explore some of the most important advancements in the history of telescopes. First, briefly explain what telescopes are, what they all do, and why they're so important within the field of astronomy. Next, identify and describe three of the most important developments/advancements in the history of telescopes. Explain why each development was so important. (There's more than one right answer to this. Focus on what you think are the most important developments, and provide a complete rationale for your selections.) Last, consider how the telescopes of the future will further advance our understanding of the universe. You are welcome to write this essay in the first person. Note: This is an extended essay question, worth 40 points. Your response should be formatted as a multi-paragraph essay with attention to essay structure, grammar mechanics, and APA formatting. Include an introduction, a conclusion, and 3-4 body paragraphs. Include in-text citations and a reference list. At least two of your references should come from this lesson. Question In your own words, explain what electromagnetic radiation is. Then explain why it is important (a) in everyday life and (b) in astronomy. Answer in 1-2 paragraphs, and use specific and relevant facts, examples, explanations, etc. to demonstrate your content knowledge. Question 3 (a) List the different parts of the electromagnetic spectrum, starting with radio waves, and explain how these waves vary across the spectrum. What do all electromagnetic waves have in common? (b) Explain why a hotter star will appear blue-white while a cooler star will appear red or is not visible at all. Answer in your own words in ~1 paragraph. Question 4 You've been asked to give a presentation about stellar spectra to a group of 6th graders. What three important ideas/concepts would you share with them? Answer in your own words in 1-2 paragraphs. Question 5 Using a stellar spectrum, how can we tell that a star is moving away from us? Select one: a. Wavelength decreases, and we observe a blueshift b. Wavelength decreases, and we observe a redshift c. Wavelength increases, and we observe a blueshift d. Wavelength increases, and we observe a redshift Question 6 (1) Identify the two basic types of telescopes. What are the primary differences between them? (2) If you had to recommend a telescope to a friend, would you recommend they invest in a refracting telescope or a reflecting telescope? Provide at least two reasons for your selection; use relevant information from the lesson to support your decision. Answer in your own words in ~1 paragraph. Question 7 In your own words, identify and describe three ways in which telescope designs have changed over time. Answer in ~1 paragraph. Question 8 Select one of the videos presented in Multimedia 4.1. What did you learn from this presentation? How did this information help clarify the topics covered in the readings? Answer in your own words in ~1 paragraph. Be sure to indicate which video you watched. Question 9 What is the primary purpose of a telescope? Select one: a. To collect a large amount of light and bring it into focus b. To magnify distant objects c. To measure star properties, such as luminosity and mass d. To measure planet properties with accuracy Question 10 In your own words, describe some of the benefits and limitations of space-based telescopes. Be sure to include at least one relevant example of a space-based telescope to help support your response. Answer in 1-2 paragraphs. Question 11 You've been tasked with selecting a site for a new ground-based telescope. What are three factors that you must consider when selecting this site? That is, what makes some sites better than others, and why? Answer in your own words in 1-2 paragraphs. Question 12 What are the three main components of every modern system that measures electromagnetic radiation from space? Describe the purpose of each component in your own words. Answer in a few sentences. Question 13 A 5-meter diameter telescope collects approximately ________ times the light of a 1-meter diameter telescope. Select one: a. 5 b. 10 c. 25 d. 78 Question 14 What are some of the celestial objects or phenomena that visible light telescopes are particularly well-equipped to observe? What are some of the challenges associated with visible light astronomy, and how do astronomers address and/or work around those issues? Answer in your own words in 1-2 paragraphs. Question 15 What is radio interferometry? How does it work, and why is it necessary? Answer in your own words in ~1 paragraph. Question 16 How do technological advances help address astronomical questions? Provide 2-3 examples to help support your response. Answer in your own words in ~1 paragraph. Question 17 Why do astronomers need different telescope designs to observe across the electromagnetic spectrum? Select one: a. Light pollution is worse at radio wavelengths than at visible wavelengths. b. New telescopes incorporate new technology to increase their efficiency. c. Photons of different energy behave differently and require different collection strategies. d. Telescopes have to adapt to the greater distortion of the atmosphere at shorter wavelengths.