Sci 103quiz On Cosmos 1videoname 1 Pulsars SCI 103 Quiz on Cosmos 1 Video Name_________________ 1. Pulsars (spinning dead stars remnants) acted like natural lighthouses and were first thought to be what? ______________________ 2. By using only sticks and shadows Erotosthanes was able to measure what about the Earth, way back in 300 BC? 3. The first real research center and library in human history, were located where? 4. Who authored the Cosmos series? 5. What is happening in the Orion nebula? 6. If space is seen as an ocean to be journeyed across, then planet Earth would be the ___________ of this cosmic ocean. Complete the analogy. 7. Where other than planet Earth has life also been found? _________________ 8. Police in Egypt in the early days of Alexander the great, searched ships for what? _____________ 9. Sagan felt that our present time, was a time of great danger - why? 10. Sagan's Cosmic Calendar has what as its beginning (jan 1) and what as its end (dec 31) ? ___________________, _____________________ Astronomy Quiz 1 (chaps 1 & 2) Name________________ 1. What unit of measurement do Astronomers use to measure distances specifically within solar systems? 2. What force is holding us down on the surface of the earth? ______ 3. How old is the universe now believed to be? _______ 4. What force holds a constellation together? _________ 5. When we say that the Earth's spin axis precesses, like a toy gyroscope does, what does that mean for the “north Star”? 6. A light year is a measure of what? __________ 7. Earth spins on its axis once in _________hours and revolves around the sun in _______days 8. How many major planets does our solar system have? ___________ 9. In all our present spaceships we ride inside a metal body, but for spaceship Earth we ride on ____________________ 10. What causes Earth to have seasons? 11. How does a solar eclipse come about? 12. Why did Pluto get demoted - give 3 reasons? 13. Standing on the south pole and watching the stars throughout a night - what patterns in the sky would they trace out? 14. Standing on the equator and watching the stars throughout a night - what patterns in the sky would they trace out? 15. Why is it, that it only seems, like the sun rises in the East, and moves across the sky to the west? 16. Why isn't each full moon an eclipse? 17. What measuring technique do we use now to know the age of the materials making up the Earth? ______________ 18. If you can spot the Andromeda galaxy in your telescope tonight, how long ago are you now seeing it? 19. What makes a star shine? 20. Planetary retrograde motion(fig 2.32) proved what, about the model of an Earth-centered solar system?
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