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






2. The entity from which the whole universe is postulated to have come from.






3. The rock that makes up the lunar highlands






4. Earth






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






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






7. When the Sun is farthest south of the celestial equator (About December 22)






8. 10 nm 10^2 nm






9. 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.






10. A subatomic particle with a negative charge. It creates light.






11. 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.






12. 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.






13. The law that syas light energy from a blackbody increases as (temperature^4)






14. The 'edge' of the universe. Light beyond this has not reached us yet.






15. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






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






17. A location on an H-are Diagram where evolving stars pulsate






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






19. An energetic event taking place in the early universe






20. Matter that reveals itself only through its gravitational attraction






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






22. 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.






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






24. 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.






25. The area behind a lens where images are resolved






26. The lens that gathers the light in a refractor






27. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)






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






29. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)






30. When material is heated and moves taking the heat energy with it






31. 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






32. The mirror that gathers the light in a reflector






33. A term referring to Earth-like planets






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






35. The distance a moon can be from a planet before shattering from tidal forces






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






37. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.






38. When material is heated and moves taking the heat energy with it






39. Jupiter






40. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






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






42. Form honeycomb like patterns surrounding empty or nearly empty voids.






43. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)






44. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






45. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.






46. A small spherical dark nebula






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






48. The equation that describes how matter equates with energy






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






50. 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.