Home > Plate Tectonics: A Scientific Revolution Unfolds > Concept #8 Quiz
Thermal convection theory for the Earth’s mantle. The Earth is currently expanding (growing). The Earth is currently contracting (shrinking). Moon and the Sun’s gravitation has shifted the Earth’s crust.
Hot material sinks as broad sheets and ribbons. Cool material sinks as slender, pipe-like plumes. Cool material sinks as thin slabs. Hot material rises as broad sheets and ribbons.
Lava from ocean ridge volcanoes likely came from melting the oceanic crust. Lava from Hawaiian volcanoes likely came from deeper in the mantle. Lava from ocean ridges likely came from deeper in the mantle. Lava from Hawaiian volcanoes likely came from melting the oceanic crust.
mantle-core density hypothesis whole-mantle convection slab-pull, ridge-push model deep-layer convection layering at 660 kilometers
Identify each of the plate tectonics driving mechanism models by selecting the correct response.
For each item below, use the pull-down menu to select the letter that labels the correct part of the image.
