Rock Types and Their Formation

The video explores the formation and properties of igneous, sedimentary, and metamorphic rocks. It explains how igneous rocks form from cooling lava or magma, sedimentary rocks from compressed sediments, and metamorphic rocks from existing rocks under heat and pressure. The video also discusses the uses and characteristics of these rocks, with examples like basalt, granite, limestone, and marble.

What are igneous rocks primarily formed from?

• Magma and lava

• Mineral deposits

• Sediment layers

• Compressed shells

Which type of igneous rock forms underground?

• Extrusive

• Volcanic

• Intrusive

• Sedimentary

What process primarily contributes to the formation of sedimentary rocks?

• Volcanic eruptions

• Erosion and sedimentation

• Metamorphosis

• Crystallization

Which of the following is a biological sedimentary rock?

• Granite

• Basalt

• Pumice

• Coal

What is the main factor that causes metamorphic rocks to form?

• Sediment deposition

• Heat and pressure

• Erosion by water

• Cooling of magma

What is the term used to describe the transformation of rocks from one type to another?

• Rock cycle

• Sedimentation

• Crystallization

• Erosion

Which rock is commonly used for kitchen countertops due to its heat resistance?

• Pumice

• Sandstone

• Granite

• Limestone

What property of pumice makes it useful in cleaning and polishing?

• Its heat resistance

• Its weight

• Its color

• Its rough texture

Which famous geological site is made of basalt rocks?

• Uluru

• Mount Everest

• Giants Causeway

• The Grand Canyon

What happens when vinegar is poured on limestone?

• It remains unchanged

• It turns blue

• It bubbles due to a chemical reaction

• It dissolves completely