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. Mercury and venus






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






3. The oldest part of the Milky Way






4. A planet that is farther from the sun than the Earth is






5. The location of a supermassive black hole






6. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






7. The shadow behind the Earth or Moon where the Sun is partially obscured.






8. Is space infinitely large?

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9. The location in the Milky Way where stars orbit like a solid wheel






10. 10 nm 10^2 nm






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






12. The 'edge' of the universe. Light beyond this has not reached us yet.






13. 10^2 nm 10^7 nm






14. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






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

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16. The dimming of starlight by intervening dust






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

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






19. The high- temperatature outer layer of the sun






20. A force exerted by reflecting sunlight






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






22. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






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






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






25. A term referring to Earth-like planets






26. All wavelengths of light emitted by a blackbody.






27. 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






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






29. The normal eastward movement of a planet against the background of hte distant stars.






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






31. A bridge of material held in position above the solar surface. They can remain for hours even days






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






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






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






35. The Big Bang says that the universe has not existed forever. It had a distinct beginning about 14 billion years ago called the 'Big Bang'. Therefore light from any object more than 14 billion light years away has not had time to reach us. The other p

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






37. The entity responsible for spiral arms in grand-design spiral galaxies






38. How is the Hubble Law consistent with an expanding universe?






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






40. 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:






41. A faint - remarkably uniform distribution of radiation in space






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






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






44. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.






45. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






46. The mirror that gathers the light in a reflector






47. A push or a pull






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






49. The family of radiant energy that includes light as a subset






50. Mercury - Venus - Earth - Mars