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 layer of the sun just above the photosphere






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






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






4. The rotation of a star or planet at different speeds at its equator and poles






5. A star that blows itself apart






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






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






8. Mercury and venus






9. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)






10. 1μm 100 nm






11. Venus






12. Where is the center of the expansion






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






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






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






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






17. 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.






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






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






20. The north-south line passing directly overhead through the zenith.






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






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






23. The mirror that gathers the light in a reflector






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






25. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






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






27. The oldest terrain on the moon






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






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






30. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes






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






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






33. A planet orbiting about a distant star






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






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






36. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas






37. The science of measuring light energy by wavelength.






38. A streak of light in the atmosphere






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






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






41. A particle of light.






42. A star fusing hydrogen to helium in it's core






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






44. Orbit in Jupiters orbit






45. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.






46. A change in the appearance of the sun at the edge of the solar disk






47. A spread of light with an uninterrupted wavelength distribution of energy.






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






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






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