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 amount an image is enlarged by a telescope






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






3. 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.






4. The entity responsible for spiral arms in grand-design spiral galaxies






5. 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)






6. Ganymede






7. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






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






9. Titan






10. 1 mm 1μm






11. How is the Hubble Law consistent with an expanding universe?






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






13. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






14. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.






15. The powdered stone fragments that make up the lunar 'soil'






16. 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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17. 10 nm 10^2 nm






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






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






20. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






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






22. A rock or iron specimen that has fallen from space






23. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






24. Hydrogen and helium (mainly)






25. The distance light travels in one year (=9.46x10^12km).






26. Electromagnetic Radiation






27. 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.






28. A continuous spectrum of light missing energy at a few wave lengths.






29. Europa






30. The gap etween saturn's A and B rings






31. A term referring to Jupiter-like planets






32. 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.






33. 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.






34. 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






35. The slow wobble of the Earth on its rotation axis.






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






37. First accurately measured the speed of light in a vacuum






38. What is the universe expanding into?






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






41. The shadow behind the Earth or Moon where the Sun is partially obscured.






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






43. What do we think the actual fate of the universe will be and why do we think this?






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






45. 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






46. Half of the longest diameter across an ellipse






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






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






49. The north-south line passing directly overhead through the zenith.






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