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. The study of the universe as a whole.






2. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






3. 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






4. 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)






5. The place in the sky that the Earth's axis points toward (can be either north or south)






6. The science of measuring light energy by wavelength.






7. A term referring to the orbital character of stars near the Sun






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






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






10. Saturn






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






12. Either Io -Europa - Ganymede - or Callisto






13. The law stating that hotter blackbodies look bluer than cooler blackbodies.

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14. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.






15. The rotation period of the Earth measured relative to the Sun.






16. A star without enough mass to begin hydrogen fusion






17. The law that describes the blackbody curve - and let to quantum mechanics.

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18. The gap inthe outer portion of Saturn's A ring






19. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.






20. The wavelengths where a specific element can absorb or emit light.






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

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






23. 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.






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






25. 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.






26. The larger bodies that formed early in teh solar nebula that were chemically differentiated






27. The sinking of denser elements to the center of a young molten planet






28. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






29. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






30. The seasonal shifting of a nearby star's position relative to more distant objects.






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






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






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






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






35. Mercury






36. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






37. Light scattered through the atmosphere that degrades astronomical images






38. The distance light travels in one year (=9.46x10^12km).






39. A prominence seen against the disk of the sun






40. In Ptolemy's geocentric solar system - the small circle on which a planet moved.






41. The surface of the sun






42. Earth






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






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






45. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






46. The location of a supermassive black hole






47. Matter that reveals itself only through its gravitational attraction.






48. The lens that gathers the light in a refractor






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






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