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 class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation






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






3. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






4. A term referring to the orbital character of stars near the Sun






5. Is there water on the moon?






6. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






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






8. Ganymede






9. The process responsible for creating the arms of flocculent spiral galaxies






10. An empirical scheme for predictin ghe orbital distances of planets






11. 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.






12. Possible Fates of the Universe






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

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14. A telescope that uses mirrors to focus light






15. Orbit in Jupiters orbit






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






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






18. A distance measure determined by the shifting of a star against the background sky every 6 months.






19. 10^2 nm 10^7 nm






20. A particle of light.






21. Very center of galaxy. suggestion of a black hole






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






23. 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.






24. The lowest energy of an atom.






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






26. Is space infinitely large?

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






28. 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






29. Jupiter - Saturn - Uranus - Neptune






30. A star that blows itself apart






31. The amount an image is enlarged by a telescope






32. A collection of galaxies like the one the Milky Way belongs to






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






34. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)






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






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






37. 100 nm 10 nm






38. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.






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






40. Titan






41. Hot cells of gas that rise and fall in the hotosphere






42. A rock or iron specimen that has fallen from space






43. 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






44. The fusion process that turns three helium nuclei into a carbon nucleus






45. A small spherical dark nebula






46. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






47. When the Sun moves from south to north across the celestial equator (about March 21)






48. A perfect absorber and radiator of electromagnetic radiation.






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






50. The point in its orbit where a planet is nearest the sun