EVERYDAY SCIENCE

Detailed explanation-1: -Igneous and sedimentary rocks can change into metamorphic rocks under great heat and pressure. For example, clay changes to slate and limestone changes to marble. Lava is molten.

Detailed explanation-2: -Extreme pressure from burial, increasing temperature at depth, and a lot of time, can alter any rock type to form a metamorphic rock. If the newly formed metamorphic rock continues to heat, it can eventually melt and become molten (magma). When the molten rock cools it forms an igneous rock.

Detailed explanation-3: -Metamorphic Rocks are rocks that have changed form due to heat and pressure. Metamorphic comes from the Greek words meta and morph. Meta means change and morph means form. Metamorphic rocks were once sedimentary, igneous or even other metamorphic rocks that have been changed by heat and pressure.

Detailed explanation-4: -Sedimentary rocks like bituminous coal, limestone, and sandstone, given enough heat and pressure, can turn into nonfoliated metamorphic rocks like anthracite coal, marble, and quartzite. Nonfoliated rocks can also form by metamorphism, which happens when magma comes in contact with the surrounding rock.

Detailed explanation-5: -If a sedimentary rock is subjected to intense heat it will melt. Once it rises up and cools down, it will form an igneous rock. If an igneous rock comes under heat and pressure, it can change into a metamorphic rock directly.