Across
- 4. the movement of hot rock in earth’s mantle which drives plate tectonics.
- 5. underwater mountain range formed as molten material rises from the mantle and drives seafloor spreading.
- 6. the name of the supercontinent that once existed
- 7. the theory that the lithosphere is broken into plates which are moving due to convection currents in the mantle.
- 8. Alfred Wegener’s theory that the continents have moved from their current positions over time.
Down
- 1. the action of new crust being created due to convection currents pulling the lithosphere apart at a divergent boundary
- 2. the downward movement of the edge of one tectonic plate beneath another plate
- 3. the type of evidence proving seafloor spreading due to reversed polarity found in rock samples from the ocean floor