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. Venus






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






3. Light scattered through the atmosphere that degrades astronomical images






4. A subatomic particle with a negative charge. It creates light.






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






6. 1μm 100 nm






7. Either Io -Europa - Ganymede - or Callisto






8. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)






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






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






11. The dimming of starlight by intervening dust






12. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals






13. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)






14. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






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






16. A planet orbiting about a distant star






17. IO






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






19. A prominence seen against the disk of the sun






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






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






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






23. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






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

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






26. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






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






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






29. A word meaning 'the same everywhere throughout.'






30. Possible Fates of the Universe






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






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






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






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

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35. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.






36. The seasonal shifting of a nearby star's position relative to more distant objects.






37. An object that may remain after a star explodes






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






39. A massive variable star used to find distances to the galaxies or clusters that contain them.






40. The seasonal shifting of a nearby star's position relative to more distant objects.






41. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






42. 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






43. Half of the longest diameter across an ellipse






44. The surface of the sun






45. Where is the center of the expansion






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






47. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






48. 10 nm 10^2 nm






49. When one side of a body always faces the planet it revolves around






50. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)