How does igneous rock differ from metamorphic and sedimentary rock?

Answer 1

Igneous rock is formed by magma cooling and becoming solid. Metamorphic rock is the end result of a process called metamorphism (which means "change in form"). Sedimentary rock is formed by sedimentation of material at the Earth's surface and within bodies of water.

Answer 2

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); precipitated = 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. Precipitated sedimentary rocks can be crystals or massive. Organic sedimentary rocks usually vary.

Answer 3

Igneous rock forms from the cooling and solidification of molten rock (magma or lava), while metamorphic rock forms from the alteration of pre-existing rock due to heat and pressure. Sedimentary rock forms from the accumulation and lithification of sediments. Igneous rocks are typically hard and crystalline, metamorphic rocks are often foliated or non-foliated, and sedimentary rocks can contain fossils or layers.

Answer 4

Igneous is made in volcanoes and molten lava metamorphic is warped under extreme pressure.