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. 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.






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






3. 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






4. A star that erratically and explosively brightens and dims






5. The oldest terrain on the moon






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






7. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






8. The equation that describes how matter equates with energy






9. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation






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






11. Venus






12. Venus






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






14. Form honeycomb like patterns surrounding empty or nearly empty voids.






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






16. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)






17. A push or a pull






18. Centered on the sun.






19. Earth






20. Possible Fates of the Universe






21. 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






22. Why does the earth have few craters while the moon has many?






23. The relation that tells how light dims with distance.






24. A term referring to Earth-like planets






25. The process of acquiring material






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






27. The source of the force that is accelerating the expansion rate of the universe.






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






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






30. 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






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






32. 1 mm 1μm






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






34. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






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






36. A fusion process in which protons build together to form helium






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






38. The displacement of spectral lines to redder colors caused by the expansion of the universe.






39. A term referring to Jupiter-like planets






40. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






41. A small round distribution of gas surrounding a dying star






42. A phenomenon seen when the Earth passes through the orbit of a burned out comet






43. A star that erratically and explosively brightens and dims






44. A particle of light.






45. A point in the sky where meteors appear to come from during a shower






46. A method of finding a star's distance from its absolute magnitude and spectral type or color.






47. The rock that makes up the lunar highlands






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






49. Earth






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