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Rock Cycle
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Rock Cycle
Erosion
Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.
Erosion breaks rocks down further and then moves them. Forces like wind and water move the rock pieces. They mix with matter like sand to become sediment. Weathering and erosion help shape Earth’s surface. They are part of a process called the rock cycle.
Description in earth science, erosion is the action of surface processes that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location.
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Learning Intention: To link erosion, weathering and deposition to the rock cycle
Deposition
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Deposition creates many types of landforms. Gravity and weight create rockslides on the sides of hills and mountains, depositing rocks at the bottom. Wind's efforts create patterns in the sand dunes of the desert as it moves the sand across the surface. Rivers create deltas when they deposit sand and sediment at their mouths, where the water slows to meet the ocean. Ocean waves create beaches and sand bars as they deposit sand over time.
Types of Rocks
Metamorphic
Metamorphic means to “change in form”. The original rock is changed by heat and pressure causing the physical and chemical changes. Metamorphic rocks are usually are related to large-scale rocks. Some rock features are folds, nappes and faults, this structure has a genetic relationship to the combined rocks. This composition is made up of various index minerals. This is a hard rock that is pressured to change its structure into stronger rocks.
Igneous
Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust
Sedimentary
These are large rocks usually contain fossil tracks of full intact fossils Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area. They are composed of other rock fragment. Soft and very easy to cut.
weathering
Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering.
The cycle of rocks
The rock cycle is a process in which rocks are continuously transformed between the three rock types igneous, sedimentary and metamorphic. If the sediments are buried under further layers of sediment, they can become lithified to produce a sedimentary rock. Magma is produced when rocks are melted.
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