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






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






3. A spinning neutron star






4. A term referring to Jupiter-like planets






5. A large and bright but cool star.






6. The mirror that gathers the light in a reflector






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






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






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






10. A star that is in the process of forming. It glows from gravitational contraction






11. A perfect absorber and radiator of electromagnetic radiation.






12. The family of radiant energy that includes light as a subset






13. The point in its orbit where a planet is nearest the sun






14. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






15. The apparent backward motion of a planet against the background of stars.






16. The location of a supermassive black hole






17. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)






18. The rate of expansion of the universe.






19. How is the Hubble Law consistent with an expanding universe?






20. The location in the Milky Way where stars orbit like a solid wheel






21. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.






22. The mix of pure photon energy that emerged at the start of the universe.






23. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






24. 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






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






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






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

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






29. A continuous spectrum of light missing energy at a few wave lengths.






30. Form honeycomb like patterns surrounding empty or nearly empty voids.






31. 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.






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






33. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere






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






35. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






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






37. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






38. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






39. Matter that reveals itself only through its gravitational attraction






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






41. The oldest terrain on the moon






42. The dimming of starlight by intervening dust






43. Venus






44. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






45. The entity responsible for spiral arms in grand-design spiral galaxies






46. The apparent path of the Sun through the stars on the celestial sphere.






47. A star without enough mass to begin hydrogen fusion






48. The location in the Milky Way where stars orbit like a solid wheel






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






50. 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 _____.