Question

lithosphere
asthenosphere
pangaea
convection currents

1. a supercontinent that once connected many of earths landmasses.
2. the rigid outer layer of earth, made of the crust and upper mantle.
3. the soft, plastic - like layer below the lithosphere that plates float on.
4. the flow of heat in the mantle that causes tectonic plates to move.

Explanation:

1. Pangaea was a supercontinent.
2. The lithosphere is Earth's rigid outer - layer.
3. The asthenosphere is the soft layer below lithosphere.
4. Convection currents in the mantle move tectonic plates.

Answer:

1. Pangaea
2. Lithosphere
3. Asthenosphere
4. Convection Currents