Which is the most likely cause of formation of the cave? Water wearing away weak parts of rock. Growth and activities of organisms can speed up the chemical weathering of rocks.

Weathering From Ice The ice expands and forms wedges in the rock that can split the rock into smaller fragments. Ice forms in the cracks of streets, expands and pushes on the surrounding rock or pavement, widening the cracks until they split and break apart.

How does deforestation by fire or human activity contribute to mass wasting? It kills tree roots that help hold the slopes in place, allowing mass movement.

mechanical weathering forms more brittle materials that are easily broken down by chemical weathering. mechanical weathering can produce smaller pieces of rock that have more surface area for chemical weathering to work on.

Mechanical weathering breaks rocks into smaller pieces without changing their composition. Ice wedging and abrasion are two important processes of mechanical weathering. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth’s surface.

Physical Weathering occurs to temperature or pressure. Physical Weathering involves rocks breaking through contact with atmospheric conditions, but Chemical Weathering breaks down rocks with the effect of certain chemicals.

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.

Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. 2. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions.

Some examples of physical weathering mechanisms:

• Frost wedging. Frost wedging happens when water filling a crack freezes and expands (as it freezes, water expands 8 to 11% in volume over liquid water).
• Heat/Cold Cycles.
• Unloading.

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.

Frost action is an example of physical weathering.

Weathering breaks down the Earth’s surface into smaller pieces. Those pieces are moved in a process called erosion, and deposited somewhere else. Weathering can be caused by wind, water, ice, plants, gravity, and changes in temperature.

1.1. Physical weathering can occur due to temperature, pressure, frost, root action, and burrowing animals. For example, cracks exploited by physical weathering will increase the surface area exposed to chemical action, thus amplifying the rate of disintegration.

One type, biological weathering , is caused by animals and plants. For example, rabbits and other burrowing animals can burrow into a crack in a rock, making it bigger and splitting the rock. You may have seen weeds growing through cracks in the pavement. This is because plant roots can grow in cracks.

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!!

Chemical weathering occurs when water dissolves minerals in a rock, producing new compounds. Hydrolysis occurs, for example, when water comes in contact with granite. Feldspar crystals inside the granite react chemically, forming clay minerals. The clay weakens the rock, making it more likely to break.

In chemical weathering, the rock reacts with substances in the environment like oxygen, carbon dioxide, and water to produce new substances. For example, iron in rock can react with oxygen and water to form rust, making the rock reddish and crumbly. During mechanical weathering, no new substances are produced.

physical and chemical weathering work together in complementary ways. when physical weathering breaks down a rock into several smaller pieces, it substantially increases the amount of surface area that is exposed to air and water, which are necessary for chemical weathering to occur.

Examples of Chemical Erosion:

• Carbonation – When carbon dioxide is present and carried by water, carbonation weathering can occur.
• Hydration – This type of weathering occurs when rocks absorb water, and the resulting hydrogen and hydrate ions form new bonds with minerals present within the rock.