yes it erodes
Igneous rock can weather and become sedimentary rock . Metamorphic rock can be melted in a volcano and become igneous rock. Igneous rock and sedimentary rock can be heated and pressurized to form metamorphic rock.
Your classmate is incorrect; while igneous rock can eventually become sedimentary rock through processes like weathering and erosion, it is not a mandatory step in the rock cycle. The rock cycle is dynamic, allowing for various pathways, including the transformation of igneous rock into metamorphic rock under heat and pressure. Additionally, sedimentary rock can also become igneous rock through melting and solidification.
Three (3) rocks in the rock cycle are sedimentary, igneous, and metamorphic rock.
Igneous rock can become sedimentary if it is weathered into sediment and then lithified.
Metamorphic rocks underground melt to become magma. When a volcano erupts, magma flows out of it. As the lava cools it hardens and becomes igneous rock.
sedimentary rock
The statement that igneous rock must become sedimentary rock is incorrect because rock formation is a dynamic and cyclical process. Igneous rocks can transform into metamorphic rocks through heat and pressure without becoming sedimentary first. Additionally, they can also be recycled back into magma, leading to the formation of new igneous rocks. Thus, while igneous rocks can become sedimentary through weathering and erosion, it is not a necessary step in the rock cycle.
sedimentary, igneous, and metamorphic
For most purposes there is no "beginning" to the rock cycle. Any rock can be weathered away and remade into sedimentary rock. Igneous rocks are sometimes depicted as the start of the rock cycle because the first rocks on Earth were igneous.
A metamorphic rock can melt into magma and then cool and crystallize to become an igneous rock. Or, a sedimentary rock (or sediments) can melt into magma and then cool and crystallize to become an igneous rock. Also, an igneous rock itself can undergo this process of melting and cooling as well.
Igneous rocks are a "finished product". They do not become sedimentary rock - though sedimentary rocks, with heat and pressure can become metamorphic rocks.
sedimentary, metamorphic and igneous