How Earth Was Formed

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Across
  1. 2. is an icy body that releases gas or dust
  2. 4. theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle.
  3. 5. closely compacted in substance.
Down
  1. 1. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
  2. 2. hit with force when moving.
  3. 3. lies between Earth's dense,superheated core and its thin outer layer, the crust.