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. 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.






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






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






4. Collections of young - hot stars






5. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






6. 100 nm 10 nm






7. Light scattered through the atmosphere that degrades astronomical images






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






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






10. Sc galaxies






11. A word meaning 'the same everywhere throughout.'






12. 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.






13. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






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






15. The process of acquiring material






16. A telescope that uses mirrors to focus light






17. 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.






18. 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.






19. Centered on the Earth






20. 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)






21. The law that describes the blackbody curve - and let to quantum mechanics.

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






23. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






24. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






25. Earth






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






27. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






28. The crust of a meteorite caused by its entry into Earth's atmosphere






29. 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.






30. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






31. IO






32. A method of finding a star's distance from its absolute magnitude and spectral type or color.






33. The first rock-sized bodies that formed in the solar nebula from dust grains






34. The study of the universe as a whole.






35. 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.






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






37. Moon in less than the angular diameter of the Sun.






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






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






40. A massive variable star used to find distances to the galaxies or clusters that contain them.






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






42. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






43. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids






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






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






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






47. Either Io -Europa - Ganymede - or Callisto






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






49. A location on an H-are Diagram where evolving stars pulsate






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







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