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. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






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






3. Venus






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






5. Poitns of gravitational stability in the orbit of a planet






6. An energetic event taking place in the early universe






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






8. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






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






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






11. When material is heated and moves taking the heat energy with it






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






13. The rotation period of the Earth measured relative to the stars.






14. A star without enough mass to begin hydrogen fusion






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






16. The dimming of starlight by intervening dust






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






18. Mercury






19. A volume of space where few - if any - galaxies are located






20. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals






21. Centered on the Earth






22. In Ptolemy's geocentric solar system - the small circle on which a planet moved.






23. The mix of pure photon energy that emerged at the start of the universe.






24. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






25. The distance light travels in one year (=9.46x10^12km).






26. Is space infinitely large?

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27. A subatomic particle with a negative charge. It creates light.






28. Ganymede and Titan






29. The entity responsible for spiral arms in grand-design spiral galaxies






30. A push or a pull






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






32. Light scattered through the atmosphere that degrades astronomical images






33. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






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






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






36. Ganymede






37. A telescope that uses mirrors to focus light






38. The rock that makes up the lunar maria






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






40. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.






41. Saturn






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






43. A measure of the force of gravity on an object






44. The shadow behind the Earth or Moon where the Sun is partially obscured.






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






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






47. A star that blows itself apart






48. A fusion process in which protons build together to form helium






49. 10^2 nm 10^7 nm






50. The process that powers the sun and hydrogen bombs