Types of Rocks and Their Formation

The video introduces rocks, explaining their composition and classification into three main types: metamorphic, igneous, and sedimentary. Metamorphic rocks form under heat and pressure, igneous rocks from cooled magma, and sedimentary rocks from compacted sediment. The rock cycle describes how rocks transform over time. Space rocks, or meteorites, differ in composition. Interesting facts include the origin of the word 'igneous' and the formation of marble.

What is the primary composition of a rock?

• Water and air

• A mixture of different minerals

• A single mineral

• Only organic materials

Which type of rock is formed under high heat and pressure?

• Igneous

• Volcanic

• Sedimentary

• Metamorphic

What is an example of a metamorphic rock?

• Sandstone

• Slate

• Limestone

• Basalt

How are igneous rocks formed?

• From plant decay

• Under ocean pressure

• By volcanic eruptions

• Through sediment compaction

Which of the following is an igneous rock?

• Granite

• Shale

• Marble

• Anthracite

What process leads to the formation of sedimentary rocks?

• Crystallization of minerals

• Cooling of magma

• Compaction of sediments

• Melting of rocks

Which rock is an example of a sedimentary rock?

• Gneiss

• Basalt

• Sandstone

• Marble

What is the rock cycle?

• A method to classify rocks

• A volcanic eruption pattern

• A process of rock formation and destruction

• A type of sedimentary rock

What are meteorites primarily composed of?

• Iron

• Carbon

• Gold

• Silicon

What does the Latin word 'ignis' mean?

• Water

• Earth

• Fire

• Air