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 huge sphere of tenuous gas surrounding the nucleus of a comet






3. The Big Bang says that the universe has not existed forever. It had a distinct beginning about 14 billion years ago called the 'Big Bang'. Therefore light from any object more than 14 billion light years away has not had time to reach us. The other p

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4. 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






5. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






6. 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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7. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






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






9. Venus






10. The number of protons in an atom.






11. Jupiter






12. The part of the Milky way that has on-going star formation






13. Neptune or uranus






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






15. A phenomenon seen when the Earth passes through the orbit of a burned out comet






16. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)






17. The lens that gathers the light in a refractor






18. The name for the only seriously considered theory of the universe.






19. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






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






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






22. A spectrum of light with energy at only a few wavelengths.






23. A telescope that uses lenses to focus light






24. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.






25. The oldest terrain on the moon






26. 100 nm 10 nm






27. 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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28. Jupiter






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






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






31. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






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






33. A change in the appearance of the sun at the edge of the solar disk






34. The fusion process that turns three helium nuclei into a carbon nucleus






35. The oldest part of the Milky Way






36. When particles are compressed to an unnatural state where their pressure is not related to their temperature






37. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)






38. The mirror that gathers the light in a reflector






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






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






41. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






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






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






44. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.






45. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?






46. The mass of an object divided by its volume






47. The location around an atom where an electron resides.






48. Dark areas on the sun that are cooler than the surrounding photosphere






49. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






50. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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