Earth;s Structure Vocab

Earth’s Structure

28. Crust- Earth’s outermost layer.

29. Mantle-  The layer directly beneath the crust.

30. Core-  The innermost layer.

31. Plate tectonics- The theory scientists use to explain plate movements.

32. Lithosphere- Zone that floats on the asthenosphere and includes all of the crust and the upper part of the upper mantle.

33. Asthenosphere- Zone of partially melted rock in the upper mantle.