Chapter 4 Vocabulary Review

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Across
  1. 3. an area of the side of a mountain away from the wind that receives little rain fall
  2. 4. a stream that flows into a larger river or body of water
  3. 6. relating to fertile topsoil left by rivers after a flood
  4. 7. the boundary that separates rivers flowing toward opposite sides of a continent;in North America,in the Rocky Mountains
  5. 8. electric power produced by moving water, usually generated by releasing water from a dam across a river
  6. 10. a huge slow,moving sheet of ice that fills valleys between mountains
  7. 11. permanently frozen layer of ground below the top layer of soil
Down
  1. 1. the area on Earth between the 23 degrees North and South lines of latitude,where the climate is almost always hot
  2. 2. routes through which people can travel by foot,vehicle,rail,ship or planes
  3. 5. a region of flat or rolled land covered with tall grasses
  4. 9. a cold,dry region covered with snow for more than half the year;a vast,treeless plain where the subsoil is always frozen