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






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






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






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






5. Either Io -Europa - Ganymede - or Callisto






6. The distance a moon can be from a planet before shattering from tidal forces






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






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






9. Clouds of low density gas often found glowing faintly on either side of an AGN.






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






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






12. An element of a highly efficient - two-dimensional electronic light detector






13. Mercury






14. The elementary building blocks from which protons and neutrons are formed.






15. All wavelengths of light emitted by a blackbody.






16. 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.






17. A streak of light in the atmosphere






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






19. 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)






20. The gap etween saturn's A and B rings






21. Electromagnetic Radiation






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






23. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






24. 100 nm 10 nm






25. The lowest energy of an atom.






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






27. 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.






28. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






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






30. Mercury






31. Matter that reveals itself only through its gravitational attraction.






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






33. The light produced when particles from the sun collide with atmospheric molecules






34. A collection of galaxies like the one the Milky Way belongs to






35. A measure of the force of gravity on an object






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






37. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






38. What is the universe expanding into?






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






40. Material that shoots rapidly out into space. Flares cause Auroras






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






42. A continuous spectrum of light missing energy at a few wave lengths.






43. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






44. The point directly overhead.






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






46. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.

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47. A star fusing hydrogen to helium in it's core






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






49. Half of the longest diameter across an ellipse






50. The layer of the sun just above the photosphere