01Ch_HW_Spring2022

Montgomery College – Rockville Astronomy 101 ASTR101 Fall 2021 Chapter 1 Homework (7 Points) Fall 2021 1 Chapter 1 Science and the Universe Fill in the Blank Questions 1-5 ask about sizes and distances to some objects in our universe. Not all of the answers can be found in your text. You may use an object more than once. You are encouraged to search online for information about these objects. Sun Pluto Uranus Andromeda Galaxy Moon The Ring Nebula Polaris Coma Supercluster 1. Which object is the largest? ______________________ 2. Which object is the smallest? ______________________ 3. Which object is closest to Earth? ______________________ 4. Which object is farthest away from Earth? ______________________ 5. How many of these objects are NOT part of the Milky Way Galaxy? ______________ Multiple Choice. For the following questions select the best answer. 6. The speed of light is 300,000,000 m/s. This could also be expressed as… A. 3.0 × 10 8 m/s B. 3.0 × 10 11 m/s C. 3.0 × 10 7 m/s D. 3.0 × 10 9 m/s E. 3.0 × 10 10 m/s 7. Which of the following has your "address" in the correct order? A. you, Earth, solar system, Local Group, Local Supercluster, Milky Way B. you, Earth, solar system, Milky Way, Local Supercluster, Local Group C. you, Earth, solar system, Local Group, Milky Way, Local Supercluster D. you, Earth, Local Group, Local Supercluster, solar system, Milky Way E. you, Earth, solar system, Milky Way, Local Group, Local Supercluster

ASTR101 Ch. 1 HW Fall 2021 2 8. The star map shown on page 19 of your Lecture Tutorials workbook shows the sky at midnight on July 1. Which of the following star groups do you see when looking east at this time? A. Auriga B. Scorpius C. Draco D. Equuleus E. Crater 9. About where is our solar system located within the Milky Way Galaxy? A. at the center of the galaxy B. at about 10 percent of the way from the center of the galaxy to the outskirts of the galactic disk C. about two-thirds of the way from the center of the galaxy to the outskirts of the galactic disk D. near the far outskirts of the galactic disk E. in the halo of the galaxy above the galactic disk 10. The bright star Aldebaran is about 64 light-years distant. If the speed of light were twice its present value, how far away would Aldebaran be? A. 6 light-years B. 8 light-years C. 16 light-years D. 32 light-years E. 64 light-years 11. Imagine that you simultaneously receive the satellite transmission of two pictures of two people that live on planets orbiting two different stars. Each image shows the people at their 21st birthday parties. Consider the following possible interpretations that could be made from your observations. Which do you think is the most plausible interpretation? A. Both people are the same age but at different distances from you. B. The people are actually different ages but at the same distance from you. C. The person that is closer to you is actually the older of the two people. D. The person that is farther from you is actually the older of the two people.