7th Science 2nd Quarter Review

12345678910111213
Across
  1. 3. The least dense layer of the earth that contains all of the oxygen and other gases.
  2. 4. Rock that is formed by heat and pressure.
  3. 5. The earth's crust is broken into different ______ plates.
  4. 8. When earth's plates were altogether in a supercontinent, what was it called?
  5. 11. A preserved remain, impression, or trace of any once-living thing from the past.
  6. 12. Cycle that shows how the three major rock types can transition into each other.
  7. 13. A natural disaster happens when tectonic plates finally break away from each other after being stuck.
Down
  1. 1. Rock that is formed by lots of compaction and cementation in layers.
  2. 2. The layer of earth where life exists (thinnest layer--what we walk on).
  3. 4. The layer of the earth that magma comes from. This layer contains convection currents.
  4. 6. Rock that is formed by the cooling of magma.
  5. 7. When a large amount of soil and rock suddenly falls down a slope.
  6. 9. The most dense part of the earth (small ball in the center of earth made out of iron and nickel.
  7. 10. A vent from which material from a magma chamber deep in the earth can erupt.