Test your basic knowledge |

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. Is space infinitely large?

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2. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






3. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.






4. The point in its orbit where a planet is farthest from the sun






5. When the Moon entirely blocks the Sun.






6. A push or a pull






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






8. Possible Fates of the Universe






9. Centered on the Earth






10. Approximate speed of light in a vacuum






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






12. Light scattered through the atmosphere that degrades astronomical images






13. Infinitely long -> 10 cm






14. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






15. The layer of the sun just above the photosphere






16. Small moons that maintain the shape of rings around Saturn and Uranus






17. The name for the only seriously considered theory of the universe.






18. A long-lived high-pressure bulge in Jupiter's southern hemisphere






19. Mercury and venus






20. Any change in the speed or direction of an object's motion






21. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






22. That which is responsible for Jupiter's magnetic field






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






24. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.






25. VENUS






26. 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 _____.






27. When the Sun is farthest south of the celestial equator (About December 22)






28. The entity from which the whole universe is postulated to have come from.






29. What Ole Roemer used to measure the speed of light in a vacuum






30. Why do Galaxies move very rapidly in the interiors of the dense clusters?






31. A particle of light






32. Moon in less than the angular diameter of the Sun.






33. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






34. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes






35. 1μm 100 nm






36. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.






37. Sc galaxies






38. A rock or iron specimen that has fallen from space






39. Collections of young - hot stars






40. The relation that tells how light dims with distance.






41. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density






42. The process of acquiring material






43. Centered on the sun.






44. A galaxy emitting large amounts of energy at long wavelengths.






45. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






46. A star that blows itself apart






47. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






48. The oldest grouping of stars - found in the galaxy halo






49. The north-south line passing directly overhead through the zenith.






50. An element of a highly efficient - two-dimensional electronic light detector