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 distance between a lens and its focal plane






2. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






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






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






5. Orbit in Jupiters orbit






6. A repeated - periodic push or pull capable of summing into a larger push or pull






7. A particle of light.






8. Jupiter






9. A push or a pull






10. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






11. The projection of the Earth's equator onto the celestial sphere.






12. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)






13. How is the Hubble Law consistent with an expanding universe?






14. A fusion process in which protons build together to form helium






15. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.






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






17. 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)






18. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)






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






20. Any change in the speed or direction of an object's motion






21. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






22. 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






23. An important quality of telescopes that increases as the square of the primary mirror or objective lens






24. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






25. Electromagnetic Radiation






26. Approximate speed of light in a vacuum






27. A term referring to Earth-like planets






28. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use






29. What do we think the actual fate of the universe will be and why do we think this?






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






31. The movement of the Earth's crustal plates riding on top of the mantle.






32. A streak of light in the atmosphere






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






34. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?






35. The point in its orbit where a planet is farthest from the sun






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






37. A spinning neutron star






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






39. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






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






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






42. The layer of the sun just above the photosphere






43. The location of a supermassive black hole






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






45. The force of attraction between any two objects having mass






46. Clouds of low density gas often found glowing faintly on either side of an AGN.






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






48. 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.






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






50. A quantity measuring the stability of the Earth's atmosphere