Multiple Choice 11) Before the telescope was invented astronomers had already le
ID: 1473926 • Letter: M
Question
Multiple Choice
11) Before the telescope was invented astronomers had already learned that I. Mars moves around the Sun in an orbit that is an ellipse with the Sun at one focus of the ellipse IL there are moons in orbit around Jupiter III. the circumference of the Earth is approximately 25,000 miles (40,000 km) IV.there are asteroids in our Solar Systenm (a) I and III (b)I, II and III (c) I, II, andIV (d) II and IV (e) all of IIII, IV 12) The Kepler satellite has been in the news many times in the past four years (and results from it were discussed in detail in this course). What is the purpose of this satellite? (a) Study of water and other molecules in the interstellar medium (b) Measure the Cosmic Microwave Background (c) Monitor the activity of the Sun (d) Explore the satellites of Saturn (e) Discover new extrasolar planets 13) The Greenhouse Effect is caused by (a) sunlight reflecting from clouds and returned back into space. (b) sunlight reflecting from oceans and returned back into space. (c) sunlight absorbed by clouds. (d) infrared light emitted by the ground into space. (e) infrared light emitted by the ground and absorbed by the atmosphere. 14) The smaller terrestrial planets have cooler interiors than the larger terrestrial planets because (a) they were cooler when they formed (b) the smaller ones are farther from the Sunl (c) they have relatively fewer radioactive elements (d) they have relatively more surface area compared to their volume (e) they had more volcanic eruptions in the past, which released their internal heat 15) A one Solar Mass star is found to have a planet in circular orbit around it witha period of 8 years. What is the size (radius)of the planets orbit? (a) 8 AU (b) 4 AU (c) 1 AU (d) 0.25 AU (e) 0.125 AUExplanation / Answer
12 e)
13 e)
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