Test your basic knowledge |

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Jupiter






2. Long - meandering cliff formed when a planet surface cools and shrinks






3. 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.






4. 10 cm -> 1 mm






5. The mirror that determines the focus configuration of a reflector






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






7. A galaxy sending out a stream of material from its nucleus






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






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






10. A galaxy sending out a stream of material from its nucleus






11. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation






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






13. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






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






15. The law that syas light energy from a blackbody increases as (temperature^4)






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






17. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






18. Saturn






19. Then the Sun moves from north to south across the celestial equator (about September 23)






20. The dimming of starlight by intervening dust






21. Radiation given off by electrons accelerating in a magnetic field






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






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

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24. A star that blows itself apart






25. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)






26. The science of measuring light energy by wavelength.






27. Dark - reddish - low-pressure bands in Jupiter's atmosphere






28. The imaginary sphere centered on the Earth that hols the stars.






29. Titan






30. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






31. 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






32. Approximate speed of light in a vacuum






33. The process of acquiring material






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






35. A spinning neutron star






36. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)






37. A large and bright but cool star.






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






39. A planet that is closer to the sun than the earth






40. 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.






41. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






42. 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.






43. Neptune or uranus






44. Mercury






45. The mass of an object divided by its volume






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






47. Jupiter






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






49. 1μm 100 nm






50. The family of radiant energy that includes light as a subset