formation of the solar system
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| The hubble space telescope is carried back and forth into space on each space shuttle mission. A. ture B. false | false
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| What did ancient cultures base their calandars on? | The seasonal cycles of celestial objects
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| The time required for the moon to orbit once around the sun | month
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| the time required for earth to orbit once around the sun | year
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| the time required for earth for earth to rotate once on its axis | day
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| a system for organizing time | calendar
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| The ancient Egyptian calendar contained one 5-day month | true
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| Which ancient calendars were linked to the sun? A. Mayan C. Roman B. Julian D. Hebrew | Mayan, Egyptian, Hebrew
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| Why did Julius Caesar add 90 days to the year 45 B.C.? | There is an extra day every 4 years.
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| Leap year are necessary because all months do not have the same number of days. A. True B. False | false
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| Most countries use the calendar. A Gregorian C. Roman B. Julian D. American | Gregorian
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| Invented algebra and our modern number system | the ancient Arabs
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| The earliest recored of astronomical observations | nabta
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| made an accurate calendar based on skilled forcasting | the babylonians
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| could predict eclipses | the ancient chinese
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| used logic and geometry to explain eclipses and the phases of the moon | the ancient greeks
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| some stones in circles are aligned with the sunrise durnig the solstices | stonehenge
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| many buildings are aligned with celestial bodies during certain astronomical events | the maya
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| produced the worlds oldest existing portable star map | the ancient chinese
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| While Europe was in the dark ages, the arab culture continued to develop astronomy. A. True B. False | true
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| How did the earliest astronomers learn what they knew about the universe? | by learning and anolizing
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| How long did Ptolemy's Earth-centered theory remain the popular theory for the structure of the universe? A. 100 years C. 1,500 years B. 500 years D. 5,000 years | 1,500 years
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| Copernicus thought that the planets orbit and was the center of the universe. (Earth or the sun, Earth or the sun) | The sun, the sun
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| Explained that planets and moons stay in orbit due to gravity | Sit Isaac Newton
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| Stated that planets move in elliptical orbits around the sun | Johannes Kepler
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| used a mural quadrant to measure the positions of the planets and stars. | Tycho Brahe
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| was the first person to use a telescope to observe celestial bodies | Galileo
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| discovered sunspots | Galileo
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| Which planet did William Herschel discover in 1781? A. Uranus C. Mars B. Jupiter D. Pluto | Uranus
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| Which invention in the 1800s allowed astronomers to improve their observations of the sky? A. the telescope C. The telegraph B. photography D. filters | photography
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| Edwin Hubble discovered that the "fuzzy patches" observed by William Heschel were really other . | galaxies
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| How did ancient cultures name the stars in the sky? | Where the stars were pasitioned
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| If people in ancient cultures could see our moden sky, they would see the same patterns of stars that we do. A. Ture B.false | true
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| What are constellations? | Sections of the sky that contain recognizable star patterns
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| The ancient greeks contellation was the same as the Japanese contellation of the drum. | orion
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| the sky is divided into a total of constellations by modern astronomers. | 88
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| Why do astronomers around the world use the same names for the constellations? | To make communication easier
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| The constellations that are visable in the sky are different in the spring and the fall. A.true B.false | true
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| Imaginary point directly over the head of the observer | zenith
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| position of a star in degrees north or south of the celestial equator | declination
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| imagary extension of earth's equator into space | celestial equator
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| angle between an object and the horizen | altitude
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| always 90 degrees from the zenith | altitude
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| where the sun appears on the first day of spring | vernal equinox
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| measure of how far east an object is from where the sun appears on the vernal equinox | fight ascension
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| line where the sky and earth appear to meet | horizon
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| Some stars located near earths poles can be seen year-round, at all times of night. What are these cstars called? | Circumpolar stars
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| Copernicus reasoned that the stars must be very far from planets because thier relative postions shift. A. true B. false | false
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| Look at the Physics connection. What does red shift tell us about other galaxies? | The universe must be expanding/ moving away.
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| A light-year is equal to the distance that light travels though space in year(s). | one
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| One light-year is about 9.46 trillion . | kilometers
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| What does figure 17 show you about the star in a constellation? A. they are spaced apart evenly B. They are fairly close together C.They are equal distance from earth D. They are very far away from each other | They are very far away from each other
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| most stars are smaller than earth A.true B. false | false
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| At what distance from earth would our entire solar system be visable from space? A. 100km C.150 light-years B.1,000,000 km D. 10 light-years | 150 light-years
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| The universe looks at a distance of 10 million light-years. | crowded
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| What do telescopes so with electromagnetic radiation? | The teloscope collects it and concentrate it
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| The simple telescope contains two lenses-an objective lens and a lens located in the of the tesescope. | eyepiece
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| As many as stars are visible in the sky without a telescope. | 6,000
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