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. An entity that is likely in the nucleus of most - if not all - galaxies.






2. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






3. The oldest terrain on the moon






4. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE






5. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






6. The mirror that gathers the light in a reflector






7. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.






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






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






10. A representation of the changes in color and brightness of an evolving protostar.






11. When massive objects bend space and time enough to create multiple images of an object located behind them






12. The mirror that determines the focus configuration of a reflector






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






14. Hot cells of gas that rise and fall in the hotosphere






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






16. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






17. First accurately measured the speed of light in a vacuum






18. When the Sun is farthest north of the celestial equator (about June 22)






19. Saturn






20. The lens in a telescope used to determine the magnification






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






22. A planet orbiting about a distant star






23. Dark areas on the sun that are cooler than the surrounding photosphere






24. The dimming of starlight by intervening dust






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






26. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.

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27. 10 nm 10^2 nm






28. When the Sun is farthest north of the celestial equator (about June 22)






29. Approximate speed of light in a vacuum






30. The fusion process that turns three helium nuclei into a carbon nucleus






31. When one side of a body always faces the planet it revolves around






32. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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33. The dark - relativley smooth areas on the moon; Latin for sea






34. A method of finding a star's distance from its absolute magnitude and spectral type or color.






35. Either Io -Europa - Ganymede - or Callisto






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






37. A particle of light






38. The average distance between the Earth and the Sun (=1.5 x10^8km)






39. Long - meandering cliff formed when a planet surface cools and shrinks






40. The organization of clusters of galaxies into sheets and strings






41. A large and bright but cool star.






42. A term referring to Earth-like planets






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






44. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






45. The elementary building blocks from which protons and neutrons are formed.






46. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.

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47. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






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






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






50. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)