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. Approximate speed of light in a vacuum






2. The slow wobble of the Earth on its rotation axis.






3. The lens in a telescope used to determine the magnification






4. The distance between a lens and its focal plane






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






6. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






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






8. A particle of light






9. Material that shoots rapidly out into space. Flares cause Auroras






10. When massive objects bend space and time enough to create multiple images of an object located behind them






11. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere






12. All wavelengths of light emitted by a blackbody.






13. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes






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






15. The place in the sky that the Earth's axis points toward (can be either north or south)






16. 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






17. Light scattered through the atmosphere that degrades astronomical images






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






19. 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.






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






21. A particle of light.






22. The equation that describes how matter equates with energy






23. Mercury - Venus - Earth - Mars






24. The layer of the sun just above the photosphere






25. The material from which the solar system formed






26. A star that is burning hydrogen to helium in a shell surrounding it's core






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






28. Sc galaxies






29. The elementary building blocks from which protons and neutrons are formed.






30. Matter that reveals itself only through its gravitational attraction






31. Collections of young - hot stars






32. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction






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






34. The high- temperatature outer layer of the sun






35. The rock that makes up the lunar maria






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






37. A very dense - highly populated cluster of galaxies






38. How is the Hubble Law consistent with an expanding universe?






39. The displacement of spectral lines to redder colors caused by the expansion of the universe.






40. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






41. When the Moon entirely blocks the Sun.






42. The amount an image is enlarged by a telescope






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






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






45. The rock that makes up the lunar highlands






46. A perfect absorber and radiator of electromagnetic radiation.






47. A star fusing hydrogen to helium in it's core






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






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






50. 100 nm 10 nm