NATS 102 Midterm Study Guide

NATS 102 Midterm Study Guide - Scientific method 1 How can...

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Scientific method 1. How can you tell if a hypothesis is testable? 2. Why does it matter (in our class) that the hypothesis be testable? 3. What makes a theory scientific? Masses, Sizes and Distances 1. Among the objects we’ve discussed, be able to talk about their a) relative sizes; b) relative masses; and c) relative distances. Be able to rank them and compare them in terms of these characteristics. Galaxy Star Globular cluster Solar System Galaxy cluster Comet Earth 2. What types of distances are most appropriate to describe with a) AU; b) ly; c) kly; d) Mly? 3. A person is about 2 meters long. The distance between the Earth and Moon is about 4 x 10 8 meters. Approximately how many people could fit in this space? 4. What are the methods astronomers use to determine the distances to different objects? Which methods are better for close objects? Which are needed for distant objects? 5.
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This note was uploaded on 04/07/2009 for the course NATS 006 taught by Professor Eisner during the Spring '09 term at Arizona.

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NATS 102 Midterm Study Guide - Scientific method 1 How can...

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