constructive  - Process that build up an existing landform or creates a new one, destructive  - Forces that destroy landforms, weathering - the breakdown of rock on Earth's surface, erosion - gradual destruction of something by wind, water, or other natural agents, deposition - when sediments, soil, and rocks are placed in a new location and added to a landform, landform - a natural feature of the earth's surface, delta - wetland area formed when sediment is deposited at the mouth of rivers, surface feature - landforms and bodies of water that cover the Earth's surface, earthquake - the shaking, rolling, or sudden shock of the Earth's surface , tectonic plate - a large piece of Earth's crust that moves very slowly and can run into other plates, plate boundary - the area where two more more plates meet, fault - where to more mor plates meet and show movement, lava - magma as it breaks through the Earth's surface, magma - molten rock below the Earth's surface, seismology - the study of earthquakes, richter scale - how earthquake strength is measured, levee - a wall built along a river to prevent flooding,

Earth and Changes Over Time

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