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 'edge' of the universe. Light beyond this has not reached us yet.






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






3. The dark - relativley smooth areas on the moon; Latin for sea






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






5. Centered on the sun.






6. When a planet lines up with the sun inthe sky






7. Jupiter






8. Is there water on the moon?






9. The imaginary sphere centered on the Earth that hols the stars.






10. Either Io -Europa - Ganymede - or Callisto






11. First accurately measured the speed of light in a vacuum






12. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






13. 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 ________.






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






15. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






16. The act of removing an electron from an atom.






17. The material from which the solar system formed






18. The name for the only seriously considered theory of the universe.






19. An energetic event taking place in the early universe






20. 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:






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






22. Venus (retrograde)






23. An important quality of telescopes that increases as the square of the primary mirror or objective lens






24. Ganymede






25. Small moons that maintain the shape of rings around Saturn and Uranus






26. Saturn






27. The mirror that determines the focus configuration of a reflector






28. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






29. A very dense - highly populated cluster of galaxies






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

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






32. A very dense - highly populated cluster of galaxies






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






34. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






35. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.






36. A push or a pull






37. The process similar to conduction by which energy moves from the solar core to the convective layer






38. A term referring to Jupiter-like planets






39. Titan






40. A particle of light.






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






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






43. The high- temperatature outer layer of the sun






44. The source of the force that is accelerating the expansion rate of the universe.






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






46. The dimming of starlight by intervening dust






47. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)






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






49. Mercury and venus






50. 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