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

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






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






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






5. A large and bright but cool star.






6. The rotation period of the Earth measured relative to the stars.






7. A point in the sky where meteors appear to come from during a shower






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






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






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






11. The oldest part of the Milky Way






12. The average distance between the Earth and the Sun (=1.5 x10^8km)






13. The most mass a white dwarf can have before collapsing to a neutron star






14. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.






15. A telescope that uses lenses to focus light






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






17. A high-pressure bulge in Neptune's southern hemisphere






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






19. The rotation of a star or planet at different speeds at its equator and poles






20. Why do Galaxies move very rapidly in the interiors of the dense clusters?






21. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






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






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

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24. 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)






25. A perfect absorber and radiator of electromagnetic radiation.






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






27. When the Sun is farthest south of the celestial equator (About December 22)






28. Jupiter






29. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.






30. A star that blows itself apart






31. A star without enough mass to begin hydrogen fusion






32. A representation of the changes in color and brightness of an evolving protostar.






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






34. A spectrum of light with energy at only a few wavelengths.






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






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






37. 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.






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

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39. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






40. The area behind a lens where images are resolved






41. The temp at which a substance in the vacuum of space solidifies






42. A star fusing hydrogen to helium in it's core






43. Venus






44. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.






45. The distance between a lens and its focal plane






46. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






47. A large and bright but cool star.






48. 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 _____.






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






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