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. Radiation given off by electrons accelerating in a magnetic field






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






3. The location of a supermassive black hole






4. 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.






5. 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.






6. 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.






7. The study of the universe as a whole.






8. The act of removing an electron from an atom.






9. The act of removing an electron from an atom.






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






11. The apparent path of the Sun through the stars on the celestial sphere.






12. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






13. Jupiter






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






15. 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)






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






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






18. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.






19. A streak of light in the atmosphere






20. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






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






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






23. Electromagnetic Radiation






24. When the Sun moves from south to north across the celestial equator (about March 21)






25. An element of a highly efficient - two-dimensional electronic light detector






26. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






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






28. Jupiter






29. Approximate speed of light in a vacuum






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






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






32. 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 _____.






33. An entity that is likely in the nucleus of most - if not all - galaxies.






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






35. Venus (retrograde)






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






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






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






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






40. The number of protons in an atom.






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






42. 10^2 nm 10^7 nm






43. The shadow area behind the Earth or Moon where the Sun is completely obscured.






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






45. The apparent path of the Sun through the stars on the celestial sphere.






46. Orbit in Jupiters orbit






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






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

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49. 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






50. A measure of the ability of a telescope to see fine detail