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 larger bodies that formed early in teh solar nebula that were chemically differentiated






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






3. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






4. The lens that gathers the light in a refractor






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

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






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






8. Dark - reddish - low-pressure bands in Jupiter's atmosphere






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






10. The law stating that hotter blackbodies look bluer than cooler blackbodies.

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






12. Electromagnetic Radiation






13. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






14. The first rock-sized bodies that formed in the solar nebula from dust grains






15. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






16. The Greek philosopher responsible for making the stellar magnitude scale.






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






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






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






20. The apparent path of the Sun through the stars on the celestial sphere.






21. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.






22. The mass of an object divided by its volume






23. The lens that gathers the light in a refractor






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






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






26. A star that blows itself apart






27. Collections of young - hot stars






28. The Greek philosopher responsible for making the stellar magnitude scale.






29. 10 cm -> 1 mm






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






31. A volume of space where few - if any - galaxies are located






32. The oldest part of the Milky Way






33. Possible Fates of the Universe






34. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas






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






36. A term referring to Jupiter-like planets






37. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






38. A prominence seen against the disk of the sun






39. 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.






40. An evolved star - past the helium flash that is burning helium to carbon in it's cores






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






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






43. An element of a highly efficient - two-dimensional electronic light detector






44. A planet that is closer to the sun than the earth






45. A star that blows itself apart






46. Jupiter






47. Either Io -Europa - Ganymede - or Callisto






48. The location of a supermassive black hole






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






50. A younger cluster of stars - found in the galaxy disk