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






2. The location of a supermassive black hole






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






4. A logarithmically scaled value for the measured brightness of a star.






5. Ganymede and Titan






6. All possible types of energy that can be emitted and absorbed by atoms.






7. Earth






8. The name for the only seriously considered theory of the universe.






9. A plot of star absolute magnitude verses spectral type.






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






11. The fusion process that turns three helium nuclei into a carbon nucleus






12. The movement of the Earth's crustal plates riding on top of the mantle.






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

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14. A quantity measuring the stability of the Earth's atmosphere






15. Neptune or uranus






16. A planet orbiting about a distant star






17. A crystalline patter found in iron meteorites






18. Saturn






19. The gap inthe outer portion of Saturn's A ring






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






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






22. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.






23. Mercury and venus






24. The distance between a lens and its focal plane






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






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






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






28. 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)






29. Electromagnetic Radiation






30. A measure of the ability of a telescope to see fine detail






31. 1μm 100 nm






32. The process responsible for creating the arms of flocculent spiral galaxies






33. The amount an image is enlarged by a telescope






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






35. Either Io -Europa - Ganymede - or Callisto






36. The point in its orbit where a planet is farthest from the sun






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






38. A particle of light






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






40. 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.






41. A small spherical dark nebula






42. The mass of an object divided by its volume






43. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






44. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






45. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






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






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






48. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use






49. 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 _____.






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