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






2. Mercury - Venus - Earth - Mars






3. The rock that makes up the lunar maria






4. That which is responsible for Jupiter's magnetic field






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






6. The oldest grouping of stars - found in the galaxy halo






7. A term referring to Earth-like planets






8. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.






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






10. An object that may remain after a star explodes






11. Hydrogen and helium (mainly)






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






13. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






14. The dimming of starlight by intervening dust






15. The displacement of spectral lines to redder colors caused by the expansion of the universe.






16. The distance between a lens and its focal plane






17. The amount an image is enlarged by a telescope






18. The law that predicts the possible types of spectra.

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19. 10 nm 10^2 nm






20. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?






21. The force of attraction between any two objects having mass






22. 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)






23. 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.






24. The study of the universe as a whole.






25. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.






26. Ganymede






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






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






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






30. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction






31. The name for the only seriously considered theory of the universe.






32. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






33. The study of the universe as a whole.






34. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.






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






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






37. A bridge of material held in position above the solar surface. They can remain for hours even days






38. A term referring to Earth-like planets






39. The normal eastward movement of a planet against the background of hte distant stars.






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






41. Very center of galaxy. suggestion of a black hole






42. A perfect absorber and radiator of electromagnetic radiation.






43. First accurately measured the speed of light in a vacuum






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






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






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






47. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.






48. Centered on the sun.






49. 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.






50. Where is the center of the expansion







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