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






2. A small and dim but hot star.






3. 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.






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






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






6. The number of protons in an atom.






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






8. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






9. Europa






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






11. A quantity measuring the stability of the Earth's atmosphere






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






14. A younger cluster of stars - found in the galaxy disk






15. Venus






16. The 'edge' of the universe. Light beyond this has not reached us yet.






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






18. Very center of galaxy. suggestion of a black hole






19. 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 ________.






20. The wavelengths where a specific element can absorb or emit light.






21. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






22. 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






23. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)






24. A very dense - highly populated cluster of galaxies






25. 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.






26. 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.






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






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






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






30. The science of measuring light energy by wavelength.






31. Ganymede






32. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






33. A star that is in the process of forming. It glows from gravitational contraction






34. An important quality of telescopes that increases as the square of the primary mirror or objective lens






35. A particle of light.






36. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






37. The crust of a meteorite caused by its entry into Earth's atmosphere






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






39. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






40. The location of a supermassive black hole






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






42. The amount an image is enlarged by a telescope






43. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






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






45. The process responsible for creating the arms of flocculent spiral galaxies






46. Hydrogen and helium (mainly)






47. The area behind a lens where images are resolved






48. 10^2 nm 10^7 nm






49. The telescope configuration that has the focus placed at the back of the primary mirror






50. Poitns of gravitational stability in the orbit of a planet