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| A structurally high area in Earth's crust. Formed by movements that bend the crust into a structure such as a dome or arch. |
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| The geological processes such as tectonic plate movement and volcanic activity, by which mountains are formed. |
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| Any of the chemical or mechanical processes by which rocks exposed to the weather undergo changes in character and break down. |
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| The process by which fragments of soil and rock are broken off from the ground surface and carried away. |
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| The process by which soil and fragments of rock are left behind at a new location. |
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| The shaking that results from the movement of rock beneath Earth's surface. |
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| Liquid magma that reaches the surface. |
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| The molten mix of rock-forming substances, gases and water from the mantle. |
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| The theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle. |
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| The process by which molten material adds new oceanic crust to the ocean floor. |
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| Small, solid pieces of material that comes from rocks or organisms. |
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| The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary. |
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| A weak spot in the crust where magma has come to the surface. |
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| A large wave produced by an earthquake on the ocean floor. |
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| A broad, flat valley through which a river flows. |
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| A huge mass of ice and snow that moves slowly over the land. |
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| Water that flows over the ground surface rather than soaking into the ground. |
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| Physical/Mechanical weathering |
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Definition
| Weathering which rocks are essentially torn apart by physical force, rather than chemical breakdown. |
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Definition
| The process by which rocks are decomposed, dissolved or loosened by chemical processes. |
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| A break in Earth's crust where slabs of rock slip past each other. |
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