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. IO






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






3. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






4. A continuous spectrum of light missing energy at a few wave lengths.






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






6. Clouds of low density gas often found glowing faintly on either side of an AGN.






7. Long - meandering cliff formed when a planet surface cools and shrinks






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






9. Collections of young - hot stars






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






11. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






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






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






14. Centered on the sun.






15. An energetic event taking place in the early universe






16. 10^2 nm 10^7 nm






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






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






19. 100 nm 10 nm






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






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






22. When the Moon entirely blocks the Sun.






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






24. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.






25. The law that syas light energy from a blackbody increases as (temperature^4)






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






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






28. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






29. A small and dim but hot star.






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






31. 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






32. The process of acquiring material






33. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)






34. Mercury and venus






35. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






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






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






38. Matter that reveals itself only through its gravitational attraction.






39. When the Sun is farthest south of the celestial equator (About December 22)






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






41. Possible Fates of the Universe






42. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






43. A planet that is closer to the sun than the earth






44. The layer of the sun just above the photosphere






45. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






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






47. The normal eastward movement of a planet against the background of hte distant stars.






48. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






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






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