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 organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)






2. Where is the center of the expansion






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






4. A plot of star absolute magnitude verses spectral type.






5. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)






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






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






8. The shadow behind the Earth or Moon where the Sun is partially obscured.






9. Then the Sun moves from north to south across the celestial equator (about September 23)






10. Radiation given off by electrons accelerating in a magnetic field






11. Neptune or uranus






12. Ganymede






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






14. A particle of light






15. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)






16. Mercury






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






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






19. A spectrum of light with energy at only a few wavelengths.






20. Mercury






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






22. When material is heated and moves taking the heat energy with it






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






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






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






26. The temp at which a substance in the vacuum of space solidifies






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






28. A crystalline patter found in iron meteorites






29. 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)






30. A star that blows itself apart






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






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






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






34. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






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






36. The shadow area behind the Earth or Moon where the Sun is completely obscured.






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






38. An object that may remain after a star explodes






39. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






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






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






42. The surface of the sun






43. The gap etween saturn's A and B rings






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






45. Collections of young - hot stars






46. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)






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






48. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.






49. The measure of a variable star's apparent magnitude as it brightens and dims with time






50. The rotation of a star or planet at different speeds at its equator and poles