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. When the Moon entirely blocks the Sun.






2. Centered on the Earth






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






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






5. Mercury - Venus - Earth - Mars






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






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






8. The lowest energy of an atom.






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






10. When the Sun is farthest north of the celestial equator (about June 22)






11. Venus






12. A force exerted by reflecting sunlight






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






14. A galaxy emitting large amounts of energy at long wavelengths.






15. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






16. 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






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






18. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






19. 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 _____.






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






21. A small spherical dark nebula






22. A small round distribution of gas surrounding a dying star






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






24. An energetic event taking place in the early universe






25. 10^2 nm 10^7 nm






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






27. The temp at which a substance in the vacuum of space solidifies






28. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






29. A spinning neutron star






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






31. Electromagnetic Radiation






32. The apparent backward motion of a planet against the background of stars.






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






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






35. Venus (retrograde)






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






37. Titan






38. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






39. Jupiter






40. The point in its orbit where a planet is farthest from the sun






41. 1 mm 1μm






42. What is the universe expanding into?






43. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






44. The amount an image is enlarged by a telescope






45. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






46. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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47. Half of the longest diameter across an ellipse






48. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.






49. The measure of a variable star's apparent magnitude as it brightens and dims with time






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