Astr 100 Study guides, Class notes & Summaries

ASTR 102 Midterm Exam Questions | 100% Correct Answers | Verified | Latest 2024 Version

ASTR 102 Quiz Questions | 100% Correct Answers | Verified | Latest 2024 Version

ASTR 102 Midterm 2 | 100% Correct Answers | Verified | Latest 2024 Version

ASTR 102 Final Lecture Questions | 100% Correct Answers | Verified | Latest 2024 Version

ASTR 102 Quiz Questions | 100% Correct Answers | Verified | Latest 2024 Version

ASTR 102 Midterm 2 | 100% Correct Answers | Verified | Latest 2024 Version

Gravity is an ________ force between two objects with mass, acting along the line between them. - correct answer attractive How many stars are in the Milky Way galaxy? - correct answer 200 billion Newton's first law of motion says that an object at constant velocity will remain at constant velocity unless acted upon by a - correct answer force In his General Theory of Relativity, Einstein revised our understanding of - correct answer gravity Early astronomers believed the earth was ...

ASTR 102 Midterm Exam Questions | 100% Correct Answers | Verified | Latest 2024 Version

A star has an apparent brightness of -2 and an absolute brightness of 1. What must be true? Select one: a. The star is further than 10 parsecs b. The star is at 10 parsecs c. The star is closer than 10 parsecs d. The star is close to exploding - c What is special about electromagnetic waves? Select one: a. We can see all of them b. They do not need a medium to travel c. They only exist near stars d. Each color travels at a different speed - b A star that has a smaller absolute bright...

The apparent motion of a foreground object relative to a distant background as the observers position changes? - Parallax When measuring parallax the distance between two observation points is called? - Baseline 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. - B. A long, thin cloud ...