HW#1: pg. 30 Rev 1 – 3, CST 1 – 3
Rev 1 – 3
1. What does an astronomer mean by "the universe"?
2. Compare the size of Earth with that of the Sun, the Milky Way galaxy, and the entire universe.
3. What is the scientific method, and how does science differ from pseudoscience?
CST 1 – 3
1. If Earth rotated twice as fast as it currently does, but its motion around the Sun stayed the same, then (a) the night would be twice as long; (b) the night would be half as long; (c) the year would be half as long; (d) the length of the day would be unchanged.
2. A long, thin cloud that stretched from directly overhead to the western horizon would have an angular size of (a) 45º; (b) 90º; (c) 180º; (d) 360º.
3. According to Figure 1.15 ("The Zodiac"), in January the Sun is in the constellation (a) Cancer; (b) Gemini; (c) Leo; (d) Aquarius.