Mechanical and Chemical Weathering

Front

What is mechanical weathering?

Back

Mechanical weathering is the process where rocks break into smaller fragments, each with the same properties as the original rock.

Front

What is chemical weathering?

Back

Chemical weathering is the process that involves the breakdown of rocks through chemical reactions, often involving water and acids.

Front

Give an example of mechanical weathering.

Back

An example of mechanical weathering is when flowing water from streams and rivers smooths sharp rocks.

Front

What is the main difference between mechanical and chemical weathering?

Back

The main difference is that mechanical weathering physically breaks rocks into smaller pieces, while chemical weathering changes the chemical composition of the rocks.

Front

What role do acids play in chemical weathering?

Back

Acids can react with minerals in rocks, leading to their breakdown and altering their structure.

Front

What is an example of a natural process that causes mechanical weathering?

Back

An example is freeze-thaw cycles, where water seeps into cracks in rocks, freezes, expands, and eventually breaks the rock apart.

Front

How does temperature affect mechanical weathering?

Back

Temperature changes can cause rocks to expand and contract, leading to cracks and breaking.

Front

What is the effect of plant roots on weathering?

Back

Plant roots can grow into cracks in rocks, exerting pressure and causing the rocks to break apart, which is a form of mechanical weathering.

Front

What is erosion?

Back

Erosion is the process by which weathered rock and soil are moved from one location to another, often by water, wind, or ice.

Front

How does chemical weathering affect the landscape?

Back

Chemical weathering can change the shape and composition of rocks, leading to the formation of soil and altering the landscape.