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 and Titan






2. An empirical scheme for predictin ghe orbital distances of planets






3. A prominence seen against the disk of the sun






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






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






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






7. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.






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






9. A perfect absorber and radiator of electromagnetic radiation.






10. What is the universe expanding into?






11. Collections of young - hot stars






12. A term referring to the orbital character of stars near the Sun






13. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals






14. The rock that makes up the lunar maria






15. The act of removing an electron from an atom.






16. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






17. The study of the universe as a whole.






18. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






19. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






20. 100 nm 10 nm






21. The relation that tells how light dims with distance.






22. A repeated - periodic push or pull capable of summing into a larger push or pull






23. Large nebula consisting of very cold gas and dust






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






25. Orbit in Jupiters orbit






26. A fusion process in which protons build together to form helium






27. Is space infinitely large?

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28. When the Sun moves from south to north across the celestial equator (about March 21)






29. Jupiter






30. A star that is in the process of forming. It glows from gravitational contraction






31. Neptune or uranus






32. The distance between a lens and its focal plane






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






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






35. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






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






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






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






39. The material from which the solar system formed






40. An important quality of telescopes that increases as the square of the primary mirror or objective lens






41. The wavelengths where a specific element can absorb or emit light.






42. A planet orbiting about a distant star






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






44. 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






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






46. 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






47. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






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






49. A crystalline patter found in iron meteorites






50. The surface of the sun