A scientific theory that Earth's crust is made of movible plates.
Plate tectonics
A sudden shaking of Earth's crust.
earthquake
An opening in Earth's crust through which lava may flow.
Volcano
The process through which rocks are broken down.
Weathering
The process of carrying away soil or pieces of rock.
Erosion
The process of dropping off bits of eroded rock.
Deposition
The central part of Earth.
Core
Is the thick layer of solid and molten rock that surrounds the core.
Mantle
Is the thin layer of solid rock that makes up the outermost layer of Earth.
Crust
All of Earth's liquid and solid water including oceans, lakes, rivers, glaciers, and the water located underground.
Hydrosphere
Is a physical feature on Earth's surface.
Landform
Is hot, melted rock.
Magma
Are deep cracks in Earth's crust where rocks move in opposite directions.
Faults
The place where the slipping begins.
Focus
That point is the earthquakes.
Epicenter
Once magma reaches Earth's surface.
Lava
As it moves, the plate passes over a stationary pool of magma.
Hot Spot
Is a larger mass of slowly flowing ice.
Glacier
Or gentle loops, sometimes form in rivers with slow-moving water.
Meanders
Particles of soil and rocks that are carried along in water.
Sediment
Is a place that is easily flooded when river water rises.
Floodplain
Is a series huge waves caused by an earthquake or volcanic eruption beneath the ocean.
Tsunami
Is a wall or a large mound of earth built along river to prevent it from flooding.
Levee