Rock, Earth, and Volcano Worksheets - Free Printable

1. The passage explains that rocks are classified into three main types: igneous, sedimentary, and metamorphic.
2. Igneous rocks form from the cooling of magma or lava; examples include granite and basalt.
3. Sedimentary rocks form from the accumulation and cementation of sediments; examples include sandstone and limestone.
4. Metamorphic rocks form when existing rocks are altered by heat, pressure, or chemically active fluids; examples include marble and slate.
5. The passage also clarifies pronunciation and etymology for key terms like “igneous” (from Latin “ignis,” meaning fire) and “sedimentary” (from Latin “sedimentum,” meaning “sitting down”).