3 Types of Rocks and The Rock Cycle

The video tutorial introduces the three main types of rocks: igneous, sedimentary, and metamorphic. It explains how igneous rocks form from cooled volcanic magma, either as intrusive or extrusive rocks, with examples like basalt and obsidian. Sedimentary rocks form from compressed sediment layers, often containing fossils, with examples like limestone and shale. Metamorphic rocks result from existing rocks transformed by heat and pressure, with examples like marble and schist. The video concludes with a recap of these rock types.

What is the primary process through which igneous rocks are formed?

• Heat and pressure transformation

• Volcanic magma cooling

• Erosion and deposition

• Sediment compression

Which of the following is an example of an igneous rock?

• Schist

• Sandstone

• Basalt

• Limestone

How do sedimentary rocks typically form?

• Through volcanic activity

• By the cooling of magma

• From the accumulation and compression of sediment

• By the transformation of existing rocks

What is a common feature found in sedimentary rocks?

• Volcanic glass

• Fossils

• Metallic minerals

• Crystals

What causes the formation of metamorphic rocks?

• Chemical weathering

• Extreme heat and pressure

• Cooling of lava

• Sediment deposition