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 law that predicts the possible types of spectra.

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2. 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.






3. When the Sun moves from south to north across the celestial equator (about March 21)






4. 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 _____.






5. Is there water on the moon?






6. A measure of the ability of a telescope to see fine detail






7. The wavelengths where a specific element can absorb or emit light.






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






9. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






10. The crust of a meteorite caused by its entry into Earth's atmosphere






11. Large nebula consisting of very cold gas and dust






12. The gap inthe outer portion of Saturn's A ring






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






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






15. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






16. The material from which the solar system formed






17. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)






18. Hydrogen and helium (mainly)






19. 10^2 nm 10^7 nm






20. A galaxy sending out a stream of material from its nucleus






21. When particles are compressed to an unnatural state where their pressure is not related to their temperature






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






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






24. 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






25. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)






26. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






27. Large nebula consisting of very cold gas and dust






28. The entity from which the whole universe is postulated to have come from.






29. An entity that is likely in the nucleus of most - if not all - galaxies.






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






31. When massive objects bend space and time enough to create multiple images of an object located behind them






32. Long - meandering cliff formed when a planet surface cools and shrinks






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






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






35. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)






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






37. The law that syas light energy from a blackbody increases as (temperature^4)






38. The wavelengths where a specific element can absorb or emit light.






39. The distance between a lens and its focal plane






40. How did Earth come to have an oxygen rich atmosphere?






41. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






42. The slow wobble of the Earth on its rotation axis.






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






44. A galaxy sending out a stream of material from its nucleus






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






46. The point in its orbit where a planet is nearest the sun






47. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






48. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






49. Then the Sun moves from north to south across the celestial equator (about September 23)






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