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 force of attraction between any two objects having mass






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






3. A measure of the force of gravity on an object






4. A volume of space where few - if any - galaxies are located






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






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






7. Where is the center of the expansion






8. A phenomenon seen when the Earth passes through the orbit of a burned out comet






9. Light scattered through the atmosphere that degrades astronomical images






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






11. 100 nm 10 nm






12. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






13. Centered on the sun.






14. Orbit in Jupiters orbit






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






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






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






18. The process that powers the sun and hydrogen bombs






19. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






20. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






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






22. Jupiter - Saturn - Uranus - Neptune






23. 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.






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






25. The oldest terrain on the moon






26. A perfect absorber and radiator of electromagnetic radiation.






27. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






28. Mercury - Venus - Earth - Mars






29. 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 _____.






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






31. Jupiter






32. What is the universe expanding into?






33. The larger bodies that formed early in teh solar nebula that were chemically differentiated






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






35. The mass of an object divided by its volume






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






37. 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.






38. A faint - remarkably uniform distribution of radiation in space






39. A term referring to Jupiter-like planets






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






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






42. Titan






43. The law that describes the blackbody curve - and let to quantum mechanics.

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






45. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.






46. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






47. A term referring to Earth-like planets






48. A particle of light.






49. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.






50. 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.