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 temp at which a substance in the vacuum of space solidifies






2. Hydrogen and helium (mainly)






3. The amount an image is enlarged by a telescope






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






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






6. An object that may remain after a star explodes






7. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






8. The number of protons in an atom.






9. The telescope configuration that has the focus placed at the back of the primary mirror






10. The law stating that hotter blackbodies look bluer than cooler blackbodies.

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

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12. Venus (retrograde)






13. 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 ________.






14. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






15. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process






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






17. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.






18. The lowest energy of an atom.






19. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)






20. 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.






21. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation






22. The point directly overhead.






23. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






24. The Greek philosopher responsible for making the stellar magnitude scale.






25. A volume of space where few - if any - galaxies are located






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






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






28. Mercury - Venus - Earth - Mars






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






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






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






32. The point in its orbit where a planet is farthest from the sun






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






34. The rotation of a star or planet at different speeds at its equator and poles






35. Titan






36. Venus






37. The location around an atom where an electron resides.






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






39. A telescope that uses mirrors to focus light






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






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






42. The mirror that gathers the light in a reflector






43. The act of removing an electron from an atom.






44. Mercury and venus






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






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






47. The shadow area behind the Earth or Moon where the Sun is completely obscured.






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






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






50. A huge sphere of tenuous gas surrounding the nucleus of a comet