Rock Types - Rock Classification

Rocks are classified into three main types based on their formation: sedimentary, metamorphic, and igneous. Sedimentary rocks form from compressed sediment layers, with limestone as a common example. Metamorphic rocks result from heat and pressure transforming existing rocks, such as limestone into marble. Igneous rocks form from cooled magma or lava, with granite being a notable example. Each rock type has unique characteristics and uses.

What is the primary process that leads to the formation of sedimentary rocks?

• Melting and cooling

• Compression of sediments

• Volcanic eruption

• Crystallization

Which rock is an example of a sedimentary rock?

• Basalt

• Limestone

• Granite

• Marble

How does limestone transform into marble?

• By being compressed under water

• By cooling from magma

• Under heat and pressure

• Through volcanic activity

What type of rock is formed when magma cools and solidifies?

• Sedimentary

• Metamorphic

• Igneous

• Limestone

Which igneous rock is known for its durability and is often used in construction?

• Marble

• Granite

• Slate

• Sandstone