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. Jupiter






2. 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 _____.






3. Matter that reveals itself only through its gravitational attraction






4. Light scattered through the atmosphere that degrades astronomical images






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






6. Any class of objects with a uniform luminosity used to determine distance.






7. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.






8. 10 nm 10^2 nm






9. Either Io -Europa - Ganymede - or Callisto






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






11. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)






12. Jupiter






13. That which is responsible for Jupiter's magnetic field






14. The location in the Milky Way where stars orbit like a solid wheel






15. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.






16. 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






17. 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)






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






19. Neptune or uranus






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






21. The apparent backward motion of a planet against the background of stars.






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






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






24. Dark areas on the sun that are cooler than the surrounding photosphere






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






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






27. A prominence seen against the disk of the sun






28. 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)






29. Ganymede






30. 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






31. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)






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






33. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






34. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)






35. 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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36. Electromagnetic Radiation






37. Centered on the sun.






38. A word meaning 'the same in all directions.'






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






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






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






42. A prominence seen against the disk of the sun






43. Any change in the speed or direction of an object's motion






44. Infinitely long -> 10 cm






45. A huge sphere of tenuous gas surrounding the nucleus of a comet






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






47. What Ole Roemer used to measure the speed of light in a vacuum






48. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc






49. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.






50. A small round distribution of gas surrounding a dying star







Sorry!:) No result found.

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