Across
- 3. Shear wave; a seismic body wave that shakes the ground perpendicular to the direction the wave is moving
- 5. The crust at the bottom of a sea or ocean
- 8. The process in which a denser plate is pushed downward beneath a less dense plate when plates converge; occurs at continental to oceanic boundaries and oceanic to oceanic boundaries.
- 9. The solid layer with plasticity in the upper mantle that is located just below the lithosphere; lithospheric plates "float" and move on this layer.
- 10. The theory that the lithosphere of Earth is divided into tectonic plates that slowly move on top of the asthenosphere
- 11. The spontaneous emission of radiation by an unstable nucleus
- 13. Magnetic lines of force from Earth's polar north and south, acting like a giant magnet.
Down
- 1. The first wave from an earthquake that is recorded by a seismograph
- 2. Heat transfer from one place to another through the movement of fluids
- 3. A wave of energy that travels through Earth and is the result of an earthquake, volcano, or explosion
- 4. Movement caused by gravity
- 6. The outermost layer of Earth, comprising the crust and the uppermost part of the mantle
- 7. The slow circulation within the mantle, driven by density differences, that transfers heat from Earth's core through the mantle. It's the driver of plate tectonics
- 12. Related to waves that travel through Earth; usually caused by earthquakes, volcanoes, or explosions