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. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






2. A plot of star absolute magnitude verses spectral type.






3. 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.






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






5. That which is responsible for Jupiter's magnetic field






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


7. A very dense - highly populated cluster of galaxies






8. When massive objects bend space and time enough to create multiple images of an object located behind them






9. That which is responsible for Jupiter's magnetic field






10. Centered on the sun.






11. A push or a pull






12. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






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






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






15. A logarithmically scaled value for the measured brightness of a star.






16. 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






17. The Big Bang says that the universe has not existed forever. It had a distinct beginning about 14 billion years ago called the 'Big Bang'. Therefore light from any object more than 14 billion light years away has not had time to reach us. The other p


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






19. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






20. The rock that makes up the lunar highlands






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






22. Light scattered through the atmosphere that degrades astronomical images






23. A star that is burning hydrogen to helium in a shell surrounding it's core






24. Jupiter - Saturn - Uranus - Neptune






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






26. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






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






28. The elementary building blocks from which protons and neutrons are formed.






29. What Ole Roemer used to measure the speed of light in a vacuum






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






31. 1 mm 1μm






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






33. Ganymede






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






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






36. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






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






38. A word used in astronomy to describe all elements besides hydrogen and helium






39. All possible types of energy that can be emitted and absorbed by atoms.






40. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






41. A representation of the changes in color and brightness of an evolving protostar.






42. A logarithmically scaled value for the measured brightness of a star.






43. A star that erratically and explosively brightens and dims






44. A long-lived high-pressure bulge in Jupiter's southern hemisphere






45. When one side of a body always faces the planet it revolves around






46. A telescope that uses mirrors to focus light






47. The oldest part of the Milky Way






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






49. 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.






50. Ganymede