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2021-06-17

What is surface area and how does it impact the rate of weathering?

What is surface area and how does it impact the rate of weathering?

1. Surface area — if the rock is broken down into small pieces, it undergoes chemical weathering more readily than does one large piece. Smaller pieces have more surface area for water and gases to react with the rock. Mechanical weathering is effective at increasing surface area.

What would increase the rate of weathering?

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.

How can increasing the surface area of rock hasten or speed up the process of weathering?

Mechanical weathering increases the overall surface area when it breaks down the rock into smaller fragnments. Increased surface area provides more surface for chemical weathering to attack the rock, allowing chemical weathering to speed up.

What is the relationship between sediment surface area and rate of weathering?

As particle size increases, weathering rate decreases. (indirect relationship) This is due to an increase in surface area.

How is surface area related to weathering?

A rock’s exposure to the weathering elements and its surface area can affect its rate of weathering. Rocks that are constantly bombarded by running water, wind, and other erosion agents, will weather more quickly. Rocks that have a large surface area exposed to these agents will also weather more quickly.

What type of weathering is release of pressure?

Pressure release which is also known as unloading is a weathering process caused by the expansion and fracturing of underlying rocks through the removal of overlying substances mostly through erosion.

Can rain and wind cause weathering rocks?

Wind, rain and waves can all cause weathering. The wind can blow tiny grains of sand against a rock. Rain and waves lashing against a rock can also wear it away over long periods of time.