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






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






3. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






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






5. Hot cells of gas that rise and fall in the hotosphere






6. A star that is in the process of forming. It glows from gravitational contraction






7. What do we think the actual fate of the universe will be and why do we think this?






8. The layer of the sun just above the photosphere






9. Earth






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






11. 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.






12. A spectrum of light with energy at only a few wavelengths.






13. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






14. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






15. The process that powers the sun and hydrogen bombs






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






17. Hot cells of gas that rise and fall in the hotosphere






18. Centered on the sun.






19. A quantity measuring the stability of the Earth's atmosphere






20. The process of acquiring material






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






22. The location of a supermassive black hole






23. 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)






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






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






26. The dark - relativley smooth areas on the moon; Latin for sea






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






28. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.






29. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






30. A high-pressure bulge in Neptune's southern hemisphere






31. Venus






32. A star that erratically and explosively brightens and dims






33. The mass of an object divided by its volume






34. The apparent magnitude a star would have if it were at a distance of 10 parsecs.






35. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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36. A small spherical dark nebula






37. A rock or iron specimen that has fallen from space






38. In Ptolemy's geocentric solar system - the small circle on which a planet moved.






39. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.






40. A planet orbiting about a distant star






41. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






42. The process that powers the sun and hydrogen bombs






43. The average distance between the Earth and the Sun (=1.5 x10^8km)






44. A spread of light with an uninterrupted wavelength distribution of energy.






45. What are the three possible geometries of the universe?






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






47. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu






48. A small chunk of rock in space






49. A planet that is farther from the sun than the Earth is






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






Can you answer 50 questions in 15 minutes?



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