Igneous and Metamorphic Rocks: Metamorphism in Action

Marble, a metamorphic rock, is widely used in construction and even in toothpaste. It originates from limestone, a sedimentary rock formed underwater from shells and ocean life. Over time, heat and pressure transform limestone into marble, making it a denser and smoother rock. Walking on marble is essentially stepping on the altered remains of ancient sea creatures.

What type of rock is marble classified as?

• Volcanic

• Igneous

• Sedimentary

• Metamorphic

Which of the following is NOT a use of marble mentioned in the video?

• Making toothpaste

• Building walls

• Creating steps

• Constructing bridges

From which sedimentary rock is marble formed?

• Granite

• Shale

• Limestone

• Sandstone

What natural process contributes to the formation of limestone?

• Wind erosion

• Glacial movement

• Volcanic eruptions

• Deposition of ocean life

What causes limestone to transform into marble?

• Chemical reactions with air

• Heat and pressure

• High humidity

• Freezing temperatures