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 point in its orbit where a planet is nearest the sun






2. Jupiter






3. Earth






4. 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.






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






6. The high- temperatature outer layer of the sun






7. Hydrogen and helium (mainly)






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






9. The rate of expansion of the universe.






10. The dimming of starlight by intervening dust






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






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






13. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






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






15. Why do Galaxies move very rapidly in the interiors of the dense clusters?






16. The number of protons in an atom.






17. The seasonal shifting of a nearby star's position relative to more distant objects.






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






19. Neptune or uranus






20. The process that powers the sun and hydrogen bombs






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






22. The place in the sky that the Earth's axis points toward (can be either north or south)






23. IO






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






25. The lowest energy of an atom.






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






27. 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






28. A small and dim but hot star.






29. The rock that makes up the lunar maria






30. Hot cells of gas that rise and fall in the hotosphere






31. The gap etween saturn's A and B rings






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






33. 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.






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






35. Venus (retrograde)






36. Jupiter - Saturn - Uranus - Neptune






37. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core






38. The law stating that hotter blackbodies look bluer than cooler blackbodies.

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39. The shadow area behind the Earth or Moon where the Sun is completely obscured.






40. The source of the force that is accelerating the expansion rate of the universe.






41. The apparent backward motion of a planet against the background of stars.






42. A star that is in the process of forming. It glows from gravitational contraction






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






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






45. 1μm 100 nm






46. The dark - relativley smooth areas on the moon; Latin for sea






47. Centered on the sun.






48. 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.






49. Venus






50. When the Moon entirely blocks the Sun.