Earth Science Regents Review


  1. cosmic background radiation is radiation observed from all directions in the universe; it's believed that it's radiation left over from the big bang that formed the universe
  2. The Coriolis effect; as planetary winds and ocean currents move across Earth's surface, Earth is turning on its axis; this rotation causes winds to appear to be deflected toward the right in the N-hemisphere and toward the left in the S-hemisphere
  3. Polaris, the North star, is located directly above the North Pole therefore the altitude of Polaris at any location in the Northern hemisphere is equal to the latitude of the observer
  4. Rocks from sediments are sedimentary rocks; clastic=fragmental
  5. ESRT-time distribution of fossils-length of lines correspond to length of time organisms lived/existed on Earth--> short line = short life; long line = __ life
  6. Earth's early atmosphere contained no free oxygen until photosynthetics organisms (aerobic bacteria) appeared; over billions of years the oxygen released by these organisms formed the ozone layer
  7. ESRT-page 14-planetary winds
  8. ESRT-page 1 radioactive decay 3.9/1.3= 3 800 --> 400 --> 200 ---> 100
  9. Volcanic ash is ejected high into the atmosphere and is carried by global winds and then settles on the ground; it's a good time marker for correlating rocks because it falls over a large area in a short period of time
  10. ESRT page 8-9