State two ways how sedimentary rock is different from igneous rock?
Answers
Answer:
Sedimentary rocks are usually formed under water when grains of broken rocks are glued together while igneous rocks form when melted rock (magma or lava) cools and metamorphic are rocks that once were igneous or sedimentary rocks but have been changed by pressure and temperature.
Answer:
SEDIMENTARY ROCKS :
1. Sedimentary rocks are formed by the deposition of pre-existing disintegrated rocks, or by precipitation from solutions.
2. Sedimentary rocks/ sediments are mixture of several minerals.
3. Shale, sandstone, limestone, conglomerate, and coal are some examples of sedimentary rocks.
IGNEOUS ROCK :
1. Igneous rocks are formed as a result of the solidification of magma or lava.
2. Igneous rocks contain 40% to 80% of silica. Magnesium and iron are the other important components.
3. Granite, pegmatite, gabbro, dolerite, basalt are some examples of igneous rocks.