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. IO






2. A distance measure determined by the shifting of a star against the background sky every 6 months.






3. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)






4. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)






5. Mercury






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






7. The projection of the Earth's equator onto the celestial sphere.






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






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






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






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






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






13. The organization of clusters of galaxies into sheets and strings






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






15. The rock that makes up the lunar highlands






16. 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.






17. The high- temperatature outer layer of the sun






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






19. Ganymede






20. The amount an image is enlarged by a telescope






21. The oldest grouping of stars - found in the galaxy halo






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






23. Neptune or uranus






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






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






26. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.






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






28. The rotation of a star or planet at different speeds at its equator and poles






29. The distance between a lens and its focal plane






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






31. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.






32. VENUS






33. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






34. Large nebula consisting of very cold gas and dust






35. Venus






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






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






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






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






41. Jupiter






42. The mass of an object divided by its volume






43. The science of measuring light energy by wavelength.






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






45. 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 ________.






46. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






47. Earth






48. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape






49. The study of the universe as a whole.






50. What causes the zones and belts on jupiter and saturn?