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 family of radiant energy that includes light as a subset






2. Mercury and venus






3. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)






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






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






6. Venus






7. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






8. When the Sun is farthest south of the celestial equator (About December 22)






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






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






11. Venus






12. A high-pressure bulge in Neptune's southern hemisphere






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






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






15. Any change in the speed or direction of an object's motion






16. When the Moon entirely blocks the Sun.






17. 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)






18. The gap inthe outer portion of Saturn's A ring






19. 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)






20. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu






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






22. 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






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






24. 100 nm 10 nm






25. The process of acquiring material






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






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






28. 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.






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






30. Mercury and venus






31. A prominence seen against the disk of the sun






32. A method of finding a star's distance from its absolute magnitude and spectral type or color.






33. 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)






34. Earth






35. Large nebula consisting of very cold gas and dust






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






37. Dark areas on the sun that are cooler than the surrounding photosphere






38. The rock that makes up the lunar maria






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






40. The lens in a telescope used to determine the magnification






41. Where is the center of the expansion






42. 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






43. Mercury






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






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






46. A small spherical dark nebula






47. Either Io -Europa - Ganymede - or Callisto






48. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






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






50. An object that may remain after a star explodes