Amy Practice Exam 1

Amy Practice Exam 1 - 5 Astronomers have mapped the surface...

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5. Astronomers have mapped the surface of Venus A. after landing several probes with rovers on the Venusian surface. B. through photography using the Hubble Space Telescope. C. using high resolution photography from large telescopes on Earth. D. with radar from spacecraft orbiting Venus. E. from the reports that alien visitors have shared. 6. Mercury is difficult to observe from Earth because A. it emits only radar. B. it rotates very rapidly. C. it reflects sunlight. D. its surface is hidden by clouds. E. it is never very far away from the Sun in the sky. 7. . Kepler’s third law states that the realationship between orbital period and semimajor axis of the orbit of a planet is P 2 =a 3 . To use this equation as written _P_ must be expressed in ____________ and _a_ must be expressed in ________. A. perihelions; aphelions B. days; kilometers C. years; kilometers D. days; astronomical units E. years; astronomical units 8. The concept of epicycle was used to explain A. retrograde motion of the planets using the geocentric theory. B. retrograde motion of the planets in modern heliocentric theory. C. the observations of a transit. D. both lunar and solar eclipses. E. the phenomenon of earthshine.
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This note was uploaded on 02/01/2011 for the course ASTR 101 taught by Professor Deming during the Spring '07 term at Maryland.

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Amy Practice Exam 1 - 5 Astronomers have mapped the surface...

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