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. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






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






3. A continuous spectrum of light missing energy at a few wave lengths.






4. The crust of a meteorite caused by its entry into Earth's atmosphere






5. A small chunk of rock in space






6. Approximate speed of light in a vacuum






7. Ganymede and Titan






8. What causes the zones and belts on jupiter and saturn?






9. Possible Fates of the Universe






10. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)






11. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






12. An object that may remain after a star explodes






13. 100 nm 10 nm






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






15. The rock that makes up the lunar maria






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






17. 100 nm 10 nm






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






19. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.






20. A star that blows itself apart






21. 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.






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






23. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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24. 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






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






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






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






28. The study of the universe as a whole.






29. 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:






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






31. A bridge of material held in position above the solar surface. They can remain for hours even days






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






33. The lowest energy of an atom.






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






35. The rock that makes up the lunar maria






36. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter






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






38. Venus






39. A prominence seen against the disk of the sun






40. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.






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






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






43. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






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






45. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






46. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)






47. In what chemical form are jupiters nitrogen - carbon and oxygen?






48. Jupiter






49. A particle of light.






50. 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