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 elementary building blocks from which protons and neutrons are formed.






2. An empirical scheme for predictin ghe orbital distances of planets






3. Mercury and venus






4. A particle of light.






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






6. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






7. A plot of star absolute magnitude verses spectral type.






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






9. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






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






11. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.






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






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






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






15. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.






16. A force exerted by reflecting sunlight






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






18. Moon in less than the angular diameter of the Sun.






19. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






20. Ganymede and Titan






21. When a planet lines up with the sun inthe sky






22. Dark - reddish - low-pressure bands in Jupiter's atmosphere






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






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






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






26. Any class of objects with a uniform luminosity used to determine distance.






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






28. The mass of an object divided by its volume






29. Is there water on the moon?






30. The mix of pure photon energy that emerged at the start of the universe.






31. A word used in astronomy to describe all elements besides hydrogen and helium






32. 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.






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






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






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






36. Hydrogen and helium (mainly)






37. A younger cluster of stars - found in the galaxy disk






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






39. The number of protons in an atom.






40. The rotation period of the Earth measured relative to the stars.






41. An evolved star - past the helium flash that is burning helium to carbon in it's cores






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

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






44. 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)






45. Electromagnetic Radiation






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






47. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






48. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






49. 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.






50. A plot of star absolute magnitude verses spectral type.