# DeAnza College Winter First Midterm Exam MAKE ALL MARKS DARK AND COMPLETE.

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2 On your Parscore sheet: A = A correct answer ( True ) B = An incorrect answer ( False ) A. Which of the following can be seen from a clear, dark location at 7:30 this evening? T F 1) The constellation Orion. T F 2) The star Sirius. T F 3) The Pleiades star cluster. T F 4) The Sun. B. Which of the following is/are Terrestrial bodies? T F 5) Mercury T F 6) Pluto T F 7) Earth T F 8) Earth s Moon C. Which of the following is/are systematically different between Terrestrial and Jovian bodies? T F 9) distance from the Sun T F 10) mass T F 11) density T F 12) diameter D. The word "parallax" refers to T F 13) seeing an object against the background from different points of view. T F 14) the ruler of the universe in Babylonian mythology. T F 15) a mathematical computation that was used by the Aztecs to predict eclipses. T F 16) the differing pull of gravity on objects of different mass. E. An Astronomical Unit is T F 17) a unit of distance. T F 18) a unit of mass. T F 19) the average distance from Earth to the Sun. T F 20) the mass of the Sun. T F 21) any unit which expresses an astronomical quantity. F. According to Kepler's laws, where is a planet moving fastest in its orbit? T F 22) at perihelion T F 23) at aphelion T F 24) when it's farthest from the Sun T F 25) when it's closest to the Sun T F 26) Kepler's laws imply that any one planet always moves at the same speed no matter where it is in its orbit. 2

3 G. In modern astronomy, the constellations are T F 27) more than 50 sky regions covering the whole sky. T F 28) a small number (less than 10) of well-defined groups of stars in our sky which are close to each other in space (also called "star clusters"). T F 29) 12 specific regions through which the planets and Moon appear to move in our sky. T F 30) used to describe directions in space, but the "pictures" they appear to make are not considered to have any fundamental physical importance. H. If we see a star about ten light years away from us, then T F 31) we are seeing it as it was about ten years ago, not as it is right now. T F 32) it is one of the most distant stars from us in the Milky Way. T F 33) it is closer to us than most stars are. T F 34) No star can be ten light years from us, since that would be inside our Solar System. I. Which of the following is/are true about the orbital motion of the planets? T F 35) They all orbit in the same direction. T F 36) They all orbit in about the same plane. T F 37) Their orbits are all elliptical. T F 38) Their orbits are all perfectly circular. J. According to your textbook, astrology today is T F 39) the same thing as astronomy. T F 40) reasonably useful as a tool to guide your daily activities. T F 41) based on the belief that the positions of celestial bodies influence human destiny. T F 42) a pseudoscience. K. Which of the following is/are example(s) of angular distance? T F 43) an astronomical unit T F 44) a light year T F 45) a degree T F 46) a minute of arc L. Which of the following is/are classes of objects in our solar system? T F 47) major planets T F 48) satellites T F 49) asteroids T F 50) Kuiper Belt objects M. Which of the following is/are true about motions in the solar system that cause changes in the sky as seen from Earth? T F 51) Earth rotates counterclockwise as seen from the North. T F 52) Earth revolves counterclockwise as seen from the North. T F 53) The Moon revolves counterclockwise as seen from the North. T F 54) The planets revolve counterclockwise as seen from the North. 3

4 N. Which of the following do you live in? T F 55) the Andromeda Galaxy. T F 56) the Milky Way Galaxy. T F 57) the Triangulum Galaxy. T F 58) the Virgo Supercluster. O. Why did Galileo spend the last years of his life under house arrest? T F 59) He persisted in saying that the Earth went around the Sun even though the church had told him not to do so. T F 60) He implied that people could travel in space by use of witchcraft spells. T F 61) The police ruled that heliocentrism was against the law, even though the church had approved of it. T F 62) He had robbed several convenience stores. P. Which of the following is/are true about the terms rotation and revolution? T F 63) Rotation means spin on an axis. T F 64) Revolution means orbiting around something else. T F 65) The Earth s revolution period is one day. T F 66) The two terms mean the same thing. Q. Which of the following was/were discovered by Galileo using a telescope? T F 67) that the Milky Way is made up of a huge number of individual stars T F 68) the brightest moons of Jupiter T F 69) mountains on the Moon T F 70) the phases of Venus R. According to the "Cosmos" episode about Kepler's life, T F 71) Kepler's mother was arrested on charges of witchcraft. T F 72) Tycho Brahe's lifestyle and friends annoyed Kepler. T F 73) Kepler developed his laws of planetary motion only after Tycho Brahe died. T F 74) Kepler's work was motivated by his religious beliefs. S The term apparent magnitude refers to T F 75) how bright a star looks in the sky. T F 76) what color a star appears to be in the sky. T F 77) how big a star looks in the sky. T F 78) how high in the sky your astrological sign was when you were born. T F 79) the first, approximate measurement of how powerful an asteroid impact is. T. Based on what we have studied about Terrestrial and Jovian planets, which of the following is/are probably true? T F 80) Neptune is farther from the Sun than Venus is. T F 81) Jupiter has a higher density than Mars does. T F 82) Mercury is made mostly of rock and metal. T F 83) Saturn is made mostly of hydrogen and helium. T F 84) Earth has a bigger diameter than Uranus does. 4

5 U. Who among the following is credited with having made the most precise measurements of planets' positions without using a telescope? T F 85) Ptolemy T F 86) Tycho Brahe T F 87) Galileo T F 88) Kepler V. Which of the following is/are in correct size order from smallest to largest? T F 89) planet, solar system, galaxy, supercluster T F 90) Local Group, Milky Way Galaxy, Virgo Supercluster, Observable Universe T F 91) diameters of: Mercury, Earth, Uranus, the Sun T F 92) distance from Earth to: Mars, the nearest star (other than the Sun), the center of the Milky Way Galaxy W. The retrograde motion of Jupiter is accounted for by T F 93) its motion along more than one circle according to the geocentric model. T F 94) its motion along more than one circle according to the Ptolemaic model. T F 95) Earth catching up with Jupiter and passing it in orbit according to the heliocentric model. T F 96) the fact that Jupiter has a very complicated orbit around the Sun; it doesn t always travel in the same direction. X. Which of the following is/are true about the Sun s motion along the ecliptic? T F 97) It moves toward the East through the constellations by some amount per day. T F 98) It moves toward the West through the constellations by some amount per day. T F 99) It takes about a month to go all the way around once. T F 100) Trick question the Sun doesn't move along the ecliptic, it moves along the celestial equator. END OF TEST. PLEASE TURN IN YOUR PARSCORE SHEET INSIDE THIS EXAM BOOKLET. 5

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