Test your basic knowledge |

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






2. The gap etween saturn's A and B rings






3. Very center of galaxy. suggestion of a black hole






4. Why does the earth have few craters while the moon has many?






5. Elliptical orbits that come inside orbit of the Earth.






6. Titan






7. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






8. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






9. The light produced when particles from the sun collide with atmospheric molecules






10. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter






11. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






12. Mercury






13. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






14. Jupiter






15. Jupiter - Saturn - Uranus - Neptune






16. What do we think the actual fate of the universe will be and why do we think this?






17. What are the three possible geometries of the universe?






18. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






19. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






20. Ganymede






21. The slow wobble of the Earth on its rotation axis.






22. The shadow area behind the Earth or Moon where the Sun is completely obscured.






23. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.






24. Light scattered through the atmosphere that degrades astronomical images






25. When the Moon entirely blocks the Sun.






26. A phenomenon seen when the Earth passes through the orbit of a burned out comet






27. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use






28. The layer of the sun just above the photosphere






29. Clouds of low density gas often found glowing faintly on either side of an AGN.






30. The projection of the Earth's equator onto the celestial sphere.






31. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)






32. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






33. A planet that is closer to the sun than the earth






34. The displacement of spectral lines to redder colors caused by the expansion of the universe.






35. The location around an atom where an electron resides.






36. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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37. The lowest energy of an atom.






38. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






39. A measure of the force of gravity on an object






40. A star that is burning hydrogen to helium in a shell surrounding it's core






41. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






42. A small chunk of rock in space






43. IO






44. The apparent magnitude a star would have if it were at a distance of 10 parsecs.






45. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)






46. What causes the zones and belts on jupiter and saturn?






47. The process similar to conduction by which energy moves from the solar core to the convective layer






48. The process that powers the sun and hydrogen bombs






49. A repeated - periodic push or pull capable of summing into a larger push or pull






50. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.







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