Lithosphere Crossword

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Across
  1. 3. move constantly to reshape the Earth's landscape
  2. 5. The element that is most abundant in the Earth's lithosphere
  3. 6. may seep below the soil and react with the minerals present in the rocks and may lead to erosion of the rock and its cracking and breaking down into smaller pieces
  4. 7. the rigid outer part of the earth, consisting of the crust and upper mantle
Down
  1. 1. thick and is mainly composed of granite rocks rich in silica and aluminum.
  2. 2. thin and dense,mainly composed of basalt rock rich in silica and magnesium
  3. 4. how many major tectonic plates are there?