Plate Tectonics Vocabulary

12345678910
Across
  1. 5. The solid, innermost layer of Earth.
  2. 8. The thin, solid, outermost layer of Earth.
  3. 9. Huge pieces of crust that slowly move on the upper part of the mantle.
  4. 10. The very slow, creeping motion of Earth's mantle caused by convection currents.
Down
  1. 1. Theory that the crust is divided into large pieces called tectonic plates that slowly move on top of the mantle.
  2. 2. The theory that continents were once connected but have drifted apart.
  3. 3. Fossils that are widespread, have lived over a relatively short period of time and can be used to correlate rock strata.
  4. 4. The liquid layer that surrounds the inner core.
  5. 6. The mineralized remains of organisms and the rock layers in which they are found.
  6. 7. The solid layer of Earth between the crust and the core.