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 distance measure determined by the shifting of a star against the background sky every 6 months.






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






3. 10^2 nm 10^7 nm






4. Very center of galaxy. suggestion of a black hole






5. Jupiter






6. The oldest terrain on the moon






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






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

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






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






11. Mercury and venus






12. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.






13. Jupiter - Saturn - Uranus - Neptune






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






15. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)






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






17. The surface of the sun






18. A long-lived high-pressure bulge in Jupiter's southern hemisphere






19. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.






20. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.






21. A star that is burning hydrogen to helium in a shell surrounding it's core






22. The location around an atom where an electron resides.






23. Earth






24. 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.






25. The process similar to conduction by which energy moves from the solar core to the convective layer






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






27. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






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






29. A term referring to Jupiter-like planets






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






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






32. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






33. Mercury and venus






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






35. A crystalline patter found in iron meteorites






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






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






38. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






39. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc






40. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.






41. In what chemical form are jupiters nitrogen - carbon and oxygen?






42. The oldest part of the Milky Way






43. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






44. The rock that makes up the lunar maria






45. Jupiter






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






47. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.






48. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






49. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






50. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter