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. The oldest grouping of stars - found in the galaxy halo






2. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






3. Ganymede and Titan






4. Material that shoots rapidly out into space. Flares cause Auroras






5. The apparent path of the Sun through the stars on the celestial sphere.






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






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






8. Electromagnetic Radiation






9. The high- temperatature outer layer of the sun






10. Mercury and venus






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






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






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






14. A huge sphere of tenuous gas surrounding the nucleus of a comet






15. Half of the longest diameter across an ellipse






16. How did Earth come to have an oxygen rich atmosphere?






17. VENUS






18. Collections of young - hot stars






19. 1 mm 1μm






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






21. What are the three possible geometries of the universe?






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






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






24. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.


25. The area behind a lens where images are resolved






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






27. A small and dim but hot star.






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






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






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






31. 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.






32. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






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






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






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






36. The gap etween saturn's A and B rings






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






38. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)






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






40. Infinitely long -> 10 cm






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






42. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






43. The oldest terrain on the moon






44. The dark - relativley smooth areas on the moon; Latin for sea






45. 10 cm -> 1 mm






46. The apparent backward motion of a planet against the background of stars.






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






48. A crystalline patter found in iron meteorites






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






50. The rotation period of the Earth measured relative to the Sun.