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. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






2. The dimming of starlight by intervening dust






3. Jupiter






4. A star fusing hydrogen to helium in it's core






5. In what chemical form are jupiters nitrogen - carbon and oxygen?






6. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)






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






8. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.






9. The rock that makes up the lunar maria






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






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






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






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






14. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids






15. The relation that tells how light dims with distance.






16. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






17. Venus






18. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






19. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






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






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






22. 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.






23. A two-filter measure of the color - and hence temperature - of a star.






24. The mass of an object divided by its volume






25. The fusion process that turns three helium nuclei into a carbon nucleus






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






27. 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)






28. The surface of the sun






29. A crystalline patter found in iron meteorites






30. 10 cm -> 1 mm






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






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






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






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






35. A measure of the ability of a telescope to see fine detail






36. The shadow area behind the Earth or Moon where the Sun is completely obscured.






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






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






39. The material from which the solar system formed






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






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






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






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






44. A change in the appearance of the sun at the edge of the solar disk






45. When the Sun moves from south to north across the celestial equator (about March 21)






46. The mirror that determines the focus configuration of a reflector






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






48. The number of protons in an atom.






49. A star that blows itself apart






50. A telescope that uses mirrors to focus light