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 planet that is closer to the sun than the earth






2. An entity that is likely in the nucleus of most - if not all - galaxies.






3. Electromagnetic Radiation






4. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.






5. 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.






6. When the Moon entirely blocks the Sun.






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






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






9. 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.






10. Then the Sun moves from north to south across the celestial equator (about September 23)






11. The telescope configuration that has the focus placed at the back of the primary mirror






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






13. The location of a supermassive black hole






14. The mass of an object divided by its volume






15. 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.






16. The high- temperatature outer layer of the sun






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






18. Jupiter






19. The mass of an object divided by its volume






20. 1μm 100 nm






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






22. 1 mm 1μm






23. Light scattered through the atmosphere that degrades astronomical images






24. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






25. The organization of clusters of galaxies into sheets and strings






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






27. 100 nm 10 nm






28. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






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






30. The study of the universe as a whole.






31. The gap inthe outer portion of Saturn's A ring






32. A star that blows itself apart






33. The imaginary sphere centered on the Earth that hols the stars.






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






35. Centered on the Earth






36. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.






37. The mirror that determines the focus configuration of a reflector






38. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






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






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






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






42. The north-south line passing directly overhead through the zenith.






43. A star without enough mass to begin hydrogen fusion






44. 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.






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






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






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






48. The force of attraction between any two objects having mass






49. A faint - remarkably uniform distribution of radiation in space






50. Either Io -Europa - Ganymede - or Callisto