plate tectonics

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Across
  1. 4. A ______________ boundary is an area where two tectonic plates are moving toward one another.
  2. 5. A __________________boundary is where two tectonic plates move away from each other.
  3. 6. Detects and records seismic waves
  4. 7. A ________________ boundary is when two plates slide past each other.
Down
  1. 1. Minerals in the ocean-floor align with the magnetic field and remain when rock solidifies.
  2. 2. A collection of all continents in one landmass
  3. 3. A ______________wave is a vibration generated by an earthquake or explosion