AS101 - Assignment 4 Exam Questions and Answers 100% Pass

AS101 - Assignment 4 Exam Questions and Answers 100% Pass Why do astronomers build radio telescopes? Question options: Radio waves give a different view of the universe Radio waves from space reach the Earth's surface Radio telescopes can detect signals from aliens 2 | P a g e Author: Katelyn Whitman. ©2025, All Rights Reserved. Radio telescopes can be much larger than optical telescopes - A What type of telescope is most likely to suffer from chromatic aberration and have a low light-gathering power? Question options: a small diameter reflecting telescope a large diameter reflecting telescope a small diameter refracting telescope a large diameter refracting telescope - C When does chromatic aberration occur in a telescope? 3 | P a g e Author: Katelyn Whitman. ©2025, All Rights Reserved. Question options: when different colours of light do not focus at the same point in a reflecting telescope when different colours of light do not focus at the same point in a refracting telescope when light of different wavelengths gets absorbed by the mirror in a reflecting telescope when light of different wavelengths gets absorbed by the lens in a refracting telescope - B What type of telescope is a radio telescope? Question options: 4 | P a g e Author: Katelyn Whitman. ©2025, All Rights Reserved. reflecting refracting deflecting retracting - A What type of telescope has a lens as its objective and contains no mirrors? Question options: deflecting 5 | P a g e Author: Katelyn Whitman. ©2025, All Rights Reserved. reflecting refracting compound - C How is the objective of most radio telescopes similar to the objective of a reflecting optical telescope? Question options: They are both bowl-shaped (concave) They are both hill-shaped (convex) 6 | P a g e Author: Katelyn Whitman. ©2025, All Rights Reserved. They are typically the same size They are both made of metal - A What type of primary is found in a reflecting telescope? Question options: prism mirror lens 7 | P a g e Author: Katelyn Whitman. ©2025, All Rights Reserved. diffraction grating - C You point your backyard reflecting telescope at the star Vega. Where does Vega's light go? Question options: from the primary mirror, to the secondary mirror, to the eyepiece from the primary mirror to the eyepiece through the primary lens, to the secondary mirror, to the eyepiece 8 | P a g e Author: Katelyn Whitman. ©2025, All Rights Reserved. through the primary lens, through the secondary lens, to the eyepiece - A Which of the following best explains the concept of atmospheric windows? Question options: Holes in the Earth's atmosphere allow ultraviolet radiation to reach the North and South poles X-ray radiation from space can see through the atmosphere to observe activities on the ground Only certain wavelengths of electromagnetic radiation from space reach the Earth's surface 9 | P a g e Author: Katelyn Whitman. ©2025, All Rights Reserved. The Earth's atmosphere can be "closed" or "open" to electromagnetic radiation, depending on the weather - C What is the main reason for building large optical telescopes? Question options: It's the best way to see through clouds and other light-abso