When the smaller rock pieces (now pebbles, sand or soil) are moved by these natural forces, it is called erosion. So, if a rock is changed or broken but stays where it is, it is called weathering. If the pieces of weathered rock are moved away, it is called erosion.

is dissolved, worn away or broken down into smaller and smaller pieces. Once the rock has been weakened and broken up by weathering it is ready for erosion. Erosion happens when rocks and sediments are picked up and moved to another place by ice, water, wind or gravity.

Wind- the least powerful can only move small pieces of rock. It is the slowest agent of erosion. Water- the most COMMON agent of erosion on Earth.

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

The agents of soil erosion are the same as of other types of erosion: water, ice, wind, and gravity. Soil erosion is more likely where the ground has been disturbed by agriculture, grazing animals, logging, mining, construction, and recreational activities.

Terms in this set (5)

• Gravity. Causes water to move downward, carrying and depositing sediment as it flows.
• Water. Rainwater and water form melting snow flow down land, carrying rock and solid particles.
• Wind. Strong wind lift tiny particles of sediment and carry them long distances.
• Ice/Glaciers.
• Waves.

Examples of Erosion:

• Caves. Caves are carved out over thousands of years by flowing water, but that activity can be sped up by carbonic acid present in the water.
• River Banks.
• Cracks in Rocks.
• Gravitation Erosion.
• Coastal Erosion.

Liquid water is the major agent of erosion on Earth. Rain, rivers, floods, lakes, and the ocean carry away bits of soil and sand and slowly wash away the sediment. Rainfall produces four types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.

Waves washing over rocks on the beach is the correct example of natural erosion because waves from any water body are naturally generated by the effect of wind and gravity these can wipe the surface materials present over the rocks on the beach.

Ice wedging

Example of weathering: Wind and water cause small pieces of rock to break off at the side of a mountain. Weathering can occur due to chemical and mechanical processes. Erosion is the movement of particles away from their source. Example of erosion: Wind carries small pieces of rock away from the side of a mountain.

Answer Expert Verified. The chemicals in the water break down the rocks, so water breaking rocks is an example of chemical weathering 🙂 Also, acids are a form of chemical weathering, as the chemicals dissolve the limestone 🙂 Hope this helped!!

These examples illustrate physical weathering:

• Swiftly moving water. Rapidly moving water can lift, for short periods of time, rocks from the stream bottom.
• Ice wedging. Ice wedging causes many rocks to break.
• Plant roots. Plant roots can grow in cracks.

Limestone rocks dissolving in water Plant roots growing through concrete and splitting it Waves carrying sand away from a beach A large rock splitting into pieces because of ice.

There are different types of chemical weathering processes, such as solution, hydration, hydrolysis, carbonation, oxidation, reduction, and chelation. Some of these reactions occur more easily when the water is slightly acidic.

Many forces are involved in weathering and erosion, including both natural and man-made causes.

• Physical Weathering. Physical or mechanical weathering is the disintegration of rock into smaller pieces.
• Chemical Weathering.
• Water Erosion.
• Wind Erosion.
• Gravity.

Examples of mechanical weathering include frost and salt wedging, unloading and exfoliation, water and wind abrasion, impacts and collisions, and biological actions. All of these processes break rocks into smaller pieces without changing the physical composition of the rock.

Corrosion

There are four main types of weathering. These are freeze-thaw, onion skin (exfoliation), chemical and biological weathering. Most rocks are very hard. However, a very small amount of water can cause them to break.

Physical Weathering Processes

• Abrasion: Abrasion is the process by which clasts are broken through direct collisions with other clasts.
• Frost Wedging:
• Biological Activity/Root Wedging:
• Salt Crystal Growth:
• Sheeting:
• Thermal Expansion:
• Works Cited.

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.

The correct answer is (a) the cracking of rock caused by the freezing and thawing of water.

While physical weathering breaks down a rock’s physical structure, chemical weathering alters a rock’s chemical composition. Physical weathering works with mechanical forces, such as friction and impact, while chemical weathering takes place at the molecular level with the exchange of ions and cations.

Water is the most important agent of chemical weathering. Two other important agents of chemical weathering are carbon dioxide and oxygen.

Chemical weathering does not cause physical damage to rock but rather is a reaction between the chemical composition of the rock and outside chemicals. Chemical weathering can make a rock more vulnerable to physical weathering forces.

What are some similarities and differences between physical and chemical weathering? However, physical weathering changes the rock’s appearance through physical changes like abrasion; while in chemical weathering, chemical reactions that happen in the environment change the rock’s appearance and composition.

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