Geology Quiz

Which layer of the Earth is the hottest?

• Crust

• Mantle

• Outer Core

• Inner Core

The Earth's crust is primarily composed of:

• Iron and nickel

• Silicon and oxygen

• Magnesium and sulfur

• Aluminum and potassium

What is a mineral?

• A liquid found within the Earth's mantle

• An organic compound in the Earth's crust

• A naturally occurring, inorganic solid with a crystal structure

• A type of rock found on the Earth's surface

Which mining method involves removing layers of earth to reach ore deposits near the surface?

• Underground mining

• Dredging

• Leach mining

• Open cut mining

Igneous rocks that form below the Earth's surface are known as:

• Intrusive igneous rocks

• Extrusive igneous rocks

• Sedimentary rocks

• Metamorphic rocks

Which of the following is a feature of extrusive igneous rocks?

• Large crystals

• Fine-grained texture

• Formed from magma

• Formed under high pressure

Magma that reaches the Earth's surface is called:

• Sediment

• Lava

• Crystal

• Mineral

A volcano is:

• An opening in the Earth's crust where gases are released

• A rupture in the crust that allows lava, ash, and gases to escape

• A type of igneous rock

• A deposit of sedimentary rock

The Earth's lithosphere is broken into how many major tectonic plates?

Which plate is not one of the seven major plates?