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 light produced when particles from the sun collide with atmospheric molecules






2. A two-filter measure of the color - and hence temperature - of a star.






3. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals






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






5. What is the universe expanding into?






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






7. The gap inthe outer portion of Saturn's A ring






8. 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






9. Collections of young - hot stars






10. A spread of light with an uninterrupted wavelength distribution of energy.






11. 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.






12. The lens in a telescope used to determine the magnification






13. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






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






15. A prominence seen against the disk of the sun






16. The rock that makes up the lunar highlands






17. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation






18. Venus






19. The process similar to conduction by which energy moves from the solar core to the convective layer






20. When the Moon entirely blocks the Sun.






21. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






22. An energetic event taking place in the early universe






23. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)






24. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation






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






26. Ganymede






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






28. Titan






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






30. Approximate speed of light in a vacuum






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






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

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33. Neptune or uranus






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






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






36. An object that may remain after a star explodes






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






38. 10 cm -> 1 mm






39. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






40. A bright area of higher temperature that often proceeds the formation of sunspots.






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






42. The distance between a lens and its focal plane






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






44. Earth






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






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






47. Titan






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






49. The shadow behind the Earth or Moon where the Sun is partially obscured.






50. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc