How are sedimentary rocks different than igneous and metamorphic rocks?
Sedimentary rocks have beds/strata. They are made from decomposed materials of other rocks. Plus they they have 3 forms: clastic = compacted or cemented rock particles (consolidated); percipitated = dissolved minerals deposited as H2O (water) cools or evaporates; organic = formed from organic matter (coal) or the activities of organisms (amber). Clastic sedimentary rocks are the most common, they are either sorted or unsorted. Percipitated sedimentary rocks can be crystals or massive. Organic sedimentary rocks usually vary.
