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. Centered on the sun.






2. The force of attraction between any two objects having mass






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






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






5. An energetic event taking place in the early universe






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

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7. Light scattered through the atmosphere that degrades astronomical images






8. A planet that is farther from the sun than the Earth is






9. A word meaning 'the same in all directions.'






10. Electromagnetic Radiation






11. Venus (retrograde)






12. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






13. A faint - remarkably uniform distribution of radiation in space






14. Saturn






15. A galaxy sending out a stream of material from its nucleus






16. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process






17. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.






18. A subatomic particle with a negative charge. It creates light.






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






20. A star fusing hydrogen to helium in it's core






21. An empirical scheme for predictin ghe orbital distances of planets






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






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






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






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






26. A huge sphere of tenuous gas surrounding the nucleus of a comet






27. A term referring to Jupiter-like planets






28. The first rock-sized bodies that formed in the solar nebula from dust grains






29. IO






30. A high-pressure bulge in Neptune's southern hemisphere






31. 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 _____.






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






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






34. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)






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






36. A bright area of higher temperature that often proceeds the formation of sunspots.






37. The first rock-sized bodies that formed in the solar nebula from dust grains






38. Poitns of gravitational stability in the orbit of a planet






39. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction






40. The oldest part of the Milky Way






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






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






43. A younger cluster of stars - found in the galaxy disk






44. All possible types of energy that can be emitted and absorbed by atoms.






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






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






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






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






49. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






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







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Can you answer 50 questions in 15 minutes?


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