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 spectrum of light with energy at only a few wavelengths.






2. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)






3. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.






4. Small moons that maintain the shape of rings around Saturn and Uranus






5. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas






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






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






8. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






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






10. An energetic event taking place in the early universe






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






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






13. A push or a pull






14. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






15. A small spherical dark nebula






16. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.






17. Moon in less than the angular diameter of the Sun.






18. 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






19. The amount an image is enlarged by a telescope






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






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






22. The point in its orbit where a planet is farthest from the sun






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






24. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)






25. Dark - reddish - low-pressure bands in Jupiter's atmosphere






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






27. Why do Galaxies move very rapidly in the interiors of the dense clusters?






28. Jupiter - Saturn - Uranus - Neptune






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






30. A large and bright but cool star.






31. 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)






32. 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.






33. 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.






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






35. The family of radiant energy that includes light as a subset






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






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






38. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation






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






40. A star without enough mass to begin hydrogen fusion






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






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






43. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






44. The number of protons in an atom.






45. Is space infinitely large?

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46. Ganymede and Titan






47. A repeated - periodic push or pull capable of summing into a larger push or pull






48. Neptune or uranus






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






50. An element of a highly efficient - two-dimensional electronic light detector







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