Chapter 2

the review *badumtshhh*

The rock cycle!

The rock cycle is an infinite cycle, starting with a protolith, which can turn into igneous, metamorphic, or sedimentary. Igneous rock is cooled magma. Sedimentary is a rock made out of sediment. Metamorphic rock is when a rock goes under transformation by heat, pressure, or anything else natural.

Mechanical/chemical weathering

Mechanical weathering is caused by ice wedging, rivers, water, and wind.

Chemical weathering is caused by chemicals deposited by plants, oxidation to perform rust, and acid rain.

source

soil layers!