Three Major Types of Rocks Quiz

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15 Questions

What are rocks defined as?

Aggregates of geological material

Which process leads to the formation of igneous rocks?

Cooling and solidification of molten rock

What is the name of the liquid rock beneath the Earth's crust?


What type of rock is associated with volcanic eruptions?

Igneous rocks

Which type of rock is formed by the compaction of sediments?

Sedimentary rocks

What distinguishes intrusive igneous rocks from extrusive igneous rocks?

The size of the crystal formations

What is a characteristic feature of diorite, which makes it suitable for use in the construction of roads and parking areas?

Fine grain texture

How are chemical sedimentary rocks formed?

When water evaporates and produces sediments of dissolved matter

What distinguishes clastic sedimentary rocks from organic sedimentary rocks?

Formation by the lithification of sediments called clasts

What is the primary difference between intrusive igneous rocks and extrusive igneous rocks?

Method of cooling

What environmental factors can lead to the formation of metamorphic rocks?

High heat, pressure, and chemical environments

What distinguishes foliated metamorphic rocks from unfoliated metamorphic rocks?

Presence of parallel bands of minerals

In which type of metamorphism is non-foliated rock typically formed?

Contact metamorphism

Which metamorphic rock is used in making monuments and sculptures?


What does the rock cycle describe?

The relation between igneous, sedimentary, and metamorphic rocks

Study Notes

Rocks and Their Formation

  • Rocks are defined as naturally occurring solid masses of mineral material.
  • Igneous rocks are formed through the process of solidification of magma or lava.
  • Magma is the liquid rock beneath the Earth's crust.

Igneous Rocks

  • Volcanic eruptions are associated with extrusive igneous rocks.
  • Intrusive igneous rocks are formed when magma cools and solidifies beneath the Earth's surface, whereas extrusive igneous rocks are formed when lava cools and solidifies on the Earth's surface.
  • Diorite is a type of intrusive igneous rock that is suitable for use in the construction of roads and parking areas due to its durability.

Sedimentary Rocks

  • Sedimentary rocks can be formed through the compaction of sediments.
  • Chemical sedimentary rocks are formed through chemical precipitation, such as when minerals are deposited from a solution.
  • Clastic sedimentary rocks are formed from the accumulation of clastic sediments, whereas organic sedimentary rocks are formed from the accumulation of organic matter.

Metamorphic Rocks

  • Metamorphic rocks are formed when rocks are subjected to high temperatures and pressures, causing changes in their mineral composition and structure.
  • Environmental factors such as heat, pressure, and chemicals can lead to the formation of metamorphic rocks.
  • Foliated metamorphic rocks have a layered or banded structure, whereas unfoliated metamorphic rocks do not have a layered structure.
  • Non-foliated rocks are typically formed through contact metamorphism, which occurs when rocks are exposed to high temperatures and pressures due to the presence of magma or other heat sources.
  • Marble is a metamorphic rock that is often used in making monuments and sculptures.

Rock Cycle

  • The rock cycle describes the continuous process of formation, transformation, and destruction of rocks.

Test your knowledge about the three major types of rocks: igneous, sedimentary, and metamorphic. Learn about their formation processes and distinctive characteristics.

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