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. A location on an H-are Diagram where evolving stars pulsate






2. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






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






4. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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5. Mercury






6. The place in the sky that the Earth's axis points toward (can be either north or south)






7. The sinking of denser elements to the center of a young molten planet






8. All wavelengths of light emitted by a blackbody.






9. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.






10. A telescope that uses lenses to focus light






11. A small and dim but hot star.






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






13. Why does the earth have few craters while the moon has many?






14. The lens that gathers the light in a refractor






15. A subatomic particle with a negative charge. It creates light.






16. A large and bright but cool star.






17. A star fusing hydrogen to helium in it's core






18. A streak of light in the atmosphere






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






20. The location in the Milky Way where stars orbit like a solid wheel






21. A bridge of material held in position above the solar surface. They can remain for hours even days






22. An object that may remain after a star explodes






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






24. Ganymede and Titan






25. A method of finding a star's distance from its absolute magnitude and spectral type or color.






26. A massive variable star used to find distances to the galaxies or clusters that contain them.






27. The oldest part of the Milky Way






28. Centered on the Earth






29. Orbit in Jupiters orbit






30. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






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






32. The displacement of spectral lines to redder colors caused by the expansion of the universe.






33. The force of attraction between any two objects having mass






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






35. Matter that reveals itself only through its gravitational attraction.






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






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






38. 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.






39. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids






40. Possible Fates of the Universe






41. Mercury






42. A point in the sky where meteors appear to come from during a shower






43. A measure of the force of gravity on an object






44. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






45. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process






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






47. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter






48. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






49. A word meaning 'the same in all directions.'






50. A crystalline patter found in iron meteorites