which are examples of chemical weathering?
choices:
oxidation of certain metals in rock
an insect digging a hole in rock for its home
acid rain breaking down compounds in rock statues
rock breaking apart during a rock slide
an increase in temperature in daytime causing a rock to crack
The examples of chemical weathering are:
- Oxidation of certain metals in rock: This occurs when certain minerals containing metals react with oxygen to form oxides. An example is the rusting of iron in rocks.
- Acid rain breaking down compounds in rock statues: Acid rain, containing sulfuric and nitric acids, can react with the minerals in rocks and dissolve them over time, causing statues or structures made of rock to deteriorate.
- An increase in temperature in daytime causing a rock to crack: This is an example of physical weathering. When rocks are exposed to high temperatures during the day and then cool down rapidly at night, the different rates of expansion and contraction can cause cracks to form in the rock.