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Physical, or mechanical, weathering happens when rock is broken through the force of another substance on the rock such as ice, running water, wind, rapid heating/cooling, or plant growth. Chemical weathering occurs when reactions between rock and another substance dissolve the rock, causing parts of it to fall away.
Mechanical weathering physically breaks rocks into smaller pieces. Chemical weathering changes the surface of rocks into new substances, such as rust.
Physical and chemical weathering degrade rocks in different ways. While physical weathering breaks down a rock’s physical structure, chemical weathering alters a rock’s chemical composition.
Types of Chemical Weathering
Physical weathering is the breaking of rocks into smaller pieces. This can happen through exfoliation, freeze-thaw cycles, abrasion, root expansion, and wet-dry cycles.
What do weathering and erosion have in common? They both occur underground. They both involve the application of heat and pressure. They both break down rocks and minerals.
These examples illustrate physical weathering:
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.
Answer. I think erosion is fast process. in weathering it takes a lot of time to crush the Rock.
Weathering and erosion are two processes that together produce natural marvels. They are accountable for the formation of caves, valleys, sand dunes and other naturally formed structures. Without weathering, erosion is not possible. Weathering is the process of breaking down rocks.
Erosion is the transportation of sediment at the Earth’s surface. 4 agents move sediment: Water, Wind, Glaciers, and Mass Wasting (gravity).
THE FORCES OF EROSION: WATER, GLACIERS, AND WIND But the most powerful erosive force on earth is not wind but water, which causes erosion in its solid form — ice-and as a liquid. Water in its liquid form causes erosion in many ways. Streams — from tiny creeks to huge rivers — carry tons of eroded earth every year.