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. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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2. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.






3. A word used in astronomy to describe all elements besides hydrogen and helium






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






5. Jupiter






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






7. The process of acquiring material






8. A phenomenon seen when the Earth passes through the orbit of a burned out comet






9. Mercury






10. A spread of light with an uninterrupted wavelength distribution of energy.






11. 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 _____.






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






13. 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.






14. A particle of light.






15. The oldest terrain on the moon






16. Venus (retrograde)






17. 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.






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






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






20. VENUS






21. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






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






23. Either Io -Europa - Ganymede - or Callisto






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






25. The point in its orbit where a planet is farthest from the sun






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






27. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






28. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






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






30. A term referring to Earth-like planets






31. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






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






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






34. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






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






36. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






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






38. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.






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






40. Electromagnetic Radiation






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






42. The entity from which the whole universe is postulated to have come from.






43. A streak of light in the atmosphere






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






45. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






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






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






48. Venus






49. All wavelengths of light emitted by a blackbody.






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

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