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

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






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






4. The area behind a lens where images are resolved






5. A word meaning 'the same everywhere throughout.'






6. 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






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






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






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






10. A force exerted by reflecting sunlight






11. The number of protons in an atom.






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






13. A spinning neutron star






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






15. A distance measure determined by the shifting of a star against the background sky every 6 months.






16. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






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






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






19. The crust of a meteorite caused by its entry into Earth's atmosphere






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






21. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)






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






23. Neptune or uranus






24. Mercury






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






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






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






28. 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.






29. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






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






31. The surface of the sun






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






33. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






34. When the Sun moves from south to north across the celestial equator (about March 21)






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






36. A small and dim but hot star.






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






38. 10 cm -> 1 mm






39. Why do Galaxies move very rapidly in the interiors of the dense clusters?






40. The most mass a white dwarf can have before collapsing to a neutron star






41. A point in the sky where meteors appear to come from during a shower






42. A change in the appearance of the sun at the edge of the solar disk






43. The mass of an object divided by its volume






44. An energetic event taking place in the early universe






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






46. Elliptical orbits that come inside orbit of the Earth.






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






48. A perfect absorber and radiator of electromagnetic radiation.






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






50. The equation that describes how matter equates with energy