exam 20001

# exam 20001 - C\lIC;~ Last name ASTR 1010 Dr Hornstein Fall...

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C(\\lIC,;~) Last name ASTR 1010 Dr. Hornstein Fall 2008 Version 4444 SECOND EXAM 20 Oct 2008 Closed books, no calculators, phones, etc. You may use one sheet (8.5" x 11") of handwritten notes. Strictly individual effort, 45 minutes maximum. DO NOT USE YOUR PHONE/IPOD/ ETC FOR ANY REASON DURING THE TEST. Write your name and student ID on this page and on the essay on the last page. Also, write and BUBBLE in your name and student ID on the scantron sheet using a #2 pencil. Enter the test form version (number underlined above) on the top left of the scantron sheet. 100 points total. Since lite sconbon fo17llS wHlnot be refNmi!ll, you 6I6J' wont to record your onswers on litis test. Ibu WILL ~et fIIis copy bock. TRUEIFALSE. Mark (a) T, or (b) F on scantron sheet based on each statement. [2 pts each] f I) When an astronaut goes on a space walk outside the space station, he will float away from the station unless he has a tether holding him to the station. \3) Based on our theory of how our own solar system formed, we would expect that other solar systems would be quite common. ~ 4) Earth's oceans and atmosphere resulted from the release of hydrogen compounds trapped inside the Earth when it first formed. ---- ) 5) The escape velocity from Earth is greater for large rockets than for small ones. MULTIPLE CHOICE. Mark scantron with the choice that BEST completes the statement or answers the question. [3 pts each] 6) Suppose that the Sun shrank in size but that its mass remained the same. What would happen to Earth's orbit? A) The size of Earth's orbit would stay the same but it would take more than one year to orbit the Sun. B) Earth's orbit would be unaffected. C) Earth's orbit would expand, and it would take more than one year to orbit the Sun. ID Earth's orbit would change from a bound orbit to an unbound orbit. ® The size of Earth's orbit would shrink, and it would take less than one year to orbit the Sun. 7) In recent years, Pluto has been reclassified as a large member of A) the moon system around Neptune. B) the Oort cloud. C) the Kuiper belt. D) an extrasolar planetary system. E) the asteroid belt. I Don't.fOrget about the essay(s) at the end!

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8) Imagine another solar system, with a star of the same mass as the Sun. Suppose a planet with a mass twice that of Earth (2 MEarth) orbits at a distance of 1AU from the star. What is the orbital period of this planet? A) 6 months B) 1 year C) 2 years ~4years ~YIt cannot be determined from the information given. 9) Each of the following lists two true facts. Which pair of facts can be used with Newton's version of Kepler's third law to determine the mass of the Sun? @ The mass of Earth is 6 x 10 24 kg and it orbits the Sun in one year. B) Mercury
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exam 20001 - C\lIC;~ Last name ASTR 1010 Dr Hornstein Fall...

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