How are rocks formed

What is the definition of a mineral?

• Solid collections of chemical compounds found on the planet.

• Organic, naturally occurring chemical compounds with a crystalline structure.

• Inorganic, naturally occurring chemical compounds with a crystalline structure.

• Any solid material that makes up the Earth's crust.

What are the primary characteristics of continental crust?

• Thick, low density, light-colored, rich in silicon and aluminum.

• Thin, dense, dark-colored, rich in iron and magnesium.

• Thin, low density, light-colored, rich in iron and magnesium.

• Thick, dense, dark-colored, rich in silicon and aluminum.

Which of the following is the correct order of Earth's layers from the outermost to the innermost?

• Crust, Mantle, Outer Core, Inner Core

• Mantle, Crust, Outer Core, Inner Core

• Crust, Outer Core, Mantle, Inner Core

• Inner Core, Outer Core, Mantle, Crust

How does intrusive igneous rock form?

• Magma erupts onto the surface and cools quickly.

• Lava cools and solidifies beneath the Earth's surface.

• Magma cools and solidifies beneath the Earth's surface.

• Sediment particles are compressed and cemented together.

What is a characteristic of felsic rocks like granite?

• Rich in darker, heavier minerals.

• Formed from lava that cooled quickly on Earth's surface.

• Rich in light-colored, lighter-weight minerals.

• Typically have a fine-grained texture.

Which of the following is a process that breaks down rocks at the Earth's surface?

• Crystallization

• Metamorphism

• Granular disintegration

• Compaction

How are sedimentary rocks primarily formed?

• Through the rapid cooling of lava on the Earth's surface.

• By the compression and cementation of sediments over time.

• From the recrystallization of existing minerals due to intense heat and pressure.

• By the melting and subsequent crystallization of magma deep within the Earth.

What process transforms existing rocks into metamorphic rocks?

• Weathering and erosion

• Crystallization from molten magma

• Intense temperature and pressure changes

• Accumulation and compaction of organic matter