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. 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.






2. Light-colored high-pressure bands in Jupiter's atmosphere






3. Electromagnetic Radiation






4. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.






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






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






7. The dimming of starlight by intervening dust






8. 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.






9. 10^2 nm 10^7 nm






10. Poitns of gravitational stability in the orbit of a planet






11. The process that powers the sun and hydrogen bombs






12. The lens in a telescope used to determine the magnification






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






14. The oldest terrain on the moon






15. Is space infinitely large?

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16. A telescope that uses mirrors to focus light






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






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






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






20. Approximate speed of light in a vacuum






21. 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.






22. The entity from which the whole universe is postulated to have come from.






23. Radiation given off by electrons accelerating in a magnetic field






24. When the Sun is farthest north of the celestial equator (about June 22)






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






26. Jupiter






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






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






29. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






30. When particles are compressed to an unnatural state where their pressure is not related to their temperature






31. 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:






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






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






34. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE






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






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






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






38. The measure of a variable star's apparent magnitude as it brightens and dims with time






39. Matter so dense that even light cannot escape its gravity






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






41. All wavelengths of light emitted by a blackbody.






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






43. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)






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






45. A word meaning 'the same in all directions.'






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






47. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






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






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






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







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