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 science of measuring light energy by wavelength.






2. Saturn






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






4. The elementary building blocks from which protons and neutrons are formed.






5. Venus (retrograde)






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






7. The rotation period of the Earth measured relative to the Sun.






8. A word meaning 'the same everywhere throughout.'






9. The most mass a white dwarf can have before collapsing to a neutron star






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






11. The oldest terrain on the moon






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






13. A collection of galaxies like the one the Milky Way belongs to






14. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.






15. An object that may remain after a star explodes






16. 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.






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






18. Approximate speed of light in a vacuum






19. The lowest energy of an atom.






20. The movement of the Earth's crustal plates riding on top of the mantle.






21. The mix of pure photon energy that emerged at the start of the universe.






22. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






23. 10 cm -> 1 mm






24. The dark - relativley smooth areas on the moon; Latin for sea






25. Saturn






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






27. Clouds of low density gas often found glowing faintly on either side of an AGN.






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






29. The equation that describes how matter equates with energy






30. A prominence seen against the disk of the sun






31. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






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






33. 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.






34. When a planet lines up with the sun inthe sky






35. 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 _____.






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






37. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.






38. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






39. 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.






40. The science of measuring light energy by wavelength.






41. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






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






43. The surface of the sun






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






45. The dimming of starlight by intervening dust






46. The dimming of starlight by intervening dust






47. Matter so dense that even light cannot escape its gravity






48. The location of a supermassive black hole






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






50. 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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