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. 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.






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






3. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core






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






5. Half of the longest diameter across an ellipse






6. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter






7. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter






8. Light-colored high-pressure bands in Jupiter's atmosphere






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






10. The lowest energy of an atom.






11. A high-pressure bulge in Neptune's southern hemisphere






12. 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.






13. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






14. A measure of the ability of a telescope to see fine detail






15. What causes the zones and belts on jupiter and saturn?






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. The projection of the Earth's equator onto the celestial sphere.






18. The apparent magnitude a star would have if it were at a distance of 10 parsecs.






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






20. An object that may remain after a star explodes






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






22. A spinning neutron star






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






24. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






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






26. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?






27. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






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






29. A planet that is farther from the sun than the Earth is






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






31. The part of the Milky way that has on-going star formation






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






33. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.






34. The wavelengths where a specific element can absorb or emit light.






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






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






37. A measure of the ability of a telescope to see fine detail






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






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






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






41. A telescope that uses mirrors to focus light






42. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






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






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






45. The number of protons in an atom.






46. The high- temperatature outer layer of the sun






47. The rotation of a star or planet at different speeds at its equator and poles






48. Ganymede






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






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