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






2. Approximate speed of light in a vacuum






3. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes






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






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






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






7. The surface of the sun






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






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






10. Either Io -Europa - Ganymede - or Callisto






11. The layer of the sun just above the photosphere






12. The source of the force that is accelerating the expansion rate of the universe.






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






14. Earth






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






16. The lens that gathers the light in a refractor






17. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






18. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






19. 10 cm -> 1 mm






20. Mercury - Venus - Earth - Mars






21. Why does the earth have few craters while the moon has many?






22. 10 nm 10^2 nm






23. The light produced when particles from the sun collide with atmospheric molecules






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






25. The average distance between the Earth and the Sun (=1.5 x10^8km)






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






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






28. The movement of the Earth's crustal plates riding on top of the mantle.






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






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






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






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






33. The high- temperatature outer layer of the sun






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






35. Titan






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






37. 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






38. What is the universe expanding into?






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






40. VENUS






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






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






43. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






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






45. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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46. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)






47. A spinning neutron star






48. The study of the universe as a whole.






49. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.






50. The Greek philosopher responsible for making the stellar magnitude scale.