Inside Our Earth

The three major types of rocks are:

• Igneous Rocks

• Intrusive Igneous Rocks

• Sedimentary Rocks

• Metamorphic Rocks

• Extrusive Igneous Rocks

Nickel and iron are the main constituents of which layer?

• Core

• Mantle

• Crust

Basalt is an example of _________________ rocks.

How are sedimentary rocks formed?

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The continental mass of the crust is made up of:

• Nickel

• Silica

• Iron

• Alumina

• Magnesium

Explain the rock cycle.

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The maximum volume of the earth constitutes of which layer

• Crust

• Mantle

• Core

Igneous Rocks are also known as ___________ rocks.

Minerals are important to humankind. Justify.

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__________ is an example of intrusive igneous rocks.