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3. hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling.
4. massive, irregularly shaped slabs of solid rock, composed of Earth's crust and upper mantle (the lithosphere), that fit together like puzzle pieces
6. a tectonic plate boundary where two plates slide horizontally past each other, causing shearing and lateral movement
8. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
12. a tectonic plate boundary where two plates move away from each other, causing magma to rise from the Earth's mantle
13. the point on the earth's surface vertically above the focus of an earthquake.
14. the Earth's outermost, solid, rocky layer, forming a thin shell over the mantle
15. the rigid outer part of the earth, consisting of the crust and upper mantle.

1. the geological process where one tectonic plate slides beneath another at a convergent plate boundary
2. a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action
5. hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
7. vibrations that travel through the Earth, caused by earthquakes, volcanic eruptions, or explosions, and are categorized as body waves (P-waves and S-waves)
9. a continuous, circular flow in a fluid (liquid or gas) driven by density differences caused by temperature variations, where warmer, less dense fluid rises and cooler, denser fluid sinks, transferring heat in a cycle
10. an area on Earth where two or more lithospheric plates collide.
11. the thick layer of rock between a planet's crust and core