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. A small spherical dark nebula






2. Titan






3. The distance between a lens and its focal plane






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






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






6. A small round distribution of gas surrounding a dying star






7. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






8. A term referring to Jupiter-like planets






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






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






11. A location on an H-are Diagram where evolving stars pulsate






12. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape






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






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






15. The powdered stone fragments that make up the lunar 'soil'






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






17. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






18. The process that powers the sun and hydrogen bombs






19. Matter so dense that even light cannot escape its gravity






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






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






22. 10 nm 10^2 nm






23. The location around an atom where an electron resides.






24. Infinitely long -> 10 cm






25. Dark - reddish - low-pressure bands in Jupiter's atmosphere






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






27. Jupiter






28. A planet orbiting about a distant star






29. 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






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






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






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






33. Large nebula consisting of very cold gas and dust






34. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






35. Ganymede






36. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu






37. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density






38. Possible Fates of the Universe






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






40. 100 nm 10 nm






41. Jupiter






42. A small spherical dark nebula






43. Any class of objects with a uniform luminosity used to determine distance.






44. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






45. A crystalline patter found in iron meteorites






46. How did Earth come to have an oxygen rich atmosphere?






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






49. The number of protons in an atom.






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

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