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. Poitns of gravitational stability in the orbit of a planet






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






3. The high- temperatature outer layer of the sun






4. The distance between a lens and its focal plane






5. Mercury - Venus - Earth - Mars






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






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






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






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






10. The rotation period of the Earth measured relative to the Sun.






11. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






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






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






14. A star that blows itself apart






15. A two-filter measure of the color - and hence temperature - of a star.






16. IO






17. The powdered stone fragments that make up the lunar 'soil'






18. Centered on the sun.






19. A point in the sky where meteors appear to come from during a shower






20. The surface of the sun






21. The first rock-sized bodies that formed in the solar nebula from dust grains






22. VENUS






23. Ganymede






24. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






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






26. All wavelengths of light emitted by a blackbody.






27. A telescope that uses lenses to focus light






28. A planet that is closer to the sun than the earth






29. Dark areas on the sun that are cooler than the surrounding photosphere






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






31. An object that may remain after a star explodes






32. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






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






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






35. The rate of expansion of the universe.






36. Ganymede and Titan






37. Poitns of gravitational stability in the orbit of a planet






38. Mercury






39. A planet that is closer to the sun than the earth






40. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






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






42. 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.






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






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






45. Why does the earth have few craters while the moon has many?






46. A particle of light.






47. An energetic event taking place in the early universe






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






49. 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 ________.






50. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.