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 technique using computer-controlled mirrors to sharpen images distorted by the atmosphere






2. The imaginary sphere centered on the Earth that hols the stars.






3. A galaxy emitting large amounts of energy at long wavelengths.






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






5. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






6. The entity responsible for spiral arms in grand-design spiral galaxies






7. A small spherical dark nebula






8. The location of a supermassive black hole






9. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






10. A word meaning 'the same in all directions.'






11. The oldest part of the Milky Way






12. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






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






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






15. Elliptical orbits that come inside orbit of the Earth.






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






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






18. The measure of a variable star's apparent magnitude as it brightens and dims with time






19. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)






20. Light-colored high-pressure bands in Jupiter's atmosphere






21. A term referring to Jupiter-like planets






22. Mercury






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






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






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

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26. The lowest energy of an atom.






27. 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.






28. What is the universe expanding into?






29. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






30. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






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






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






33. The lowest energy of an atom.






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






35. All wavelengths of light emitted by a blackbody.






36. The organization of clusters of galaxies into sheets and strings






37. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






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






39. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






40. A push or a pull






41. Venus






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






43. Is space infinitely large?

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






45. A particle of light.






46. Small moons that maintain the shape of rings around Saturn and Uranus






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






48. A star that is burning hydrogen to helium in a shell surrounding it's core






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






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