Plate Tectonics
Across
- 1. The layer of rock that forms Earth’s outer surface.
- 4. The hypothesis that the continents slowly move across Earth’s surface.
- 5. The theory that pieces of Earth’s lithosphere are in constant motion, driven by convection currents in the mantle.
- 8. A well-tested concept that explains a wide range of observations.
- 9. The material that forms Earth’s hard surface.
Down
- 1. A great landmass surrounded by oceans.
- 2. A scientist who studies the forces that make and shape planet Earth
- 3. The layer of hot, solid material between Earth’s crust and core.
- 6. A dense sphere of solid iron and nickel in the center of Earth.
- 7. A layer of molten iron and nickel that surrounds the inner core of Earth.