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. Ganymede






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






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






4. A telescope that uses mirrors to focus light






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






6. The place in the sky that the Earth's axis points toward (can be either north or south)






7. Mercury






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






9. Small moons that maintain the shape of rings around Saturn and Uranus






10. The law that predicts the possible types of spectra.

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11. A star that blows itself apart






12. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






13. Small moons that maintain the shape of rings around Saturn and Uranus






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






15. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






16. Very center of galaxy. suggestion of a black hole






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






18. A term referring to Jupiter-like planets






19. Venus






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






21. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)






22. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






23. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






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






25. A galaxy emitting large amounts of energy at long wavelengths.






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






27. All wavelengths of light emitted by a blackbody.






28. The location around an atom where an electron resides.






29. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)






30. A crystalline patter found in iron meteorites






31. A small and dim but hot star.






32. An evolved star - past the helium flash that is burning helium to carbon in it's cores






33. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






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






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






36. The distance a moon can be from a planet before shattering from tidal forces






37. A distance measure determined by the shifting of a star against the background sky every 6 months.






38. VENUS






39. What is the universe expanding into?






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






41. A push or a pull






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






43. The rock that makes up the lunar highlands






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






45. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)






46. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.






47. The dimming of starlight by intervening dust






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






49. The powdered stone fragments that make up the lunar 'soil'






50. The point directly overhead.