Quiz on the Structure of the Earth

What are the three concentric layers of the Earth?

• Crust, Sima, Sial

• Mantle, Core, Lithosphere

• Crust, Mantle, Core

• Crust, Ocean, Atmosphere

What is the average thickness of the continental crust?

• 8 km

• 2,900 km

• 5 km

• 35 km

Which elements primarily make up the oceanic crust?

• Silicon and Aluminium

• Silicon and Magnesium

• Iron and Nickel

• Calcium and Potassium

What is the average temperature of the lower mantle?

• 87 degrees Celsius

• 2,200 degrees Celsius

• 5,000 degrees Celsius

• 3,700 degrees Celsius

What is the main component of the Earth's core?

• Silicon

• Iron

• Magnesium

• Aluminium

What type of rocks are formed from the cooling of molten magma?

• Metamorphic rocks

• Fossil rocks

• Sedimentary rocks

• Igneous rocks

What are sedimentary rocks primarily formed from?

• Metamorphic processes

• Volcanic eruptions

• Sediments

• Magma

Which of the following is an example of a metamorphic rock?

• Basalt

• Marble

• Limestone

• Granite

What is the process of transformation of rock from one type to another called?

• Rock Cycle

• Mineral Cycle

• Sedimentary Process

• Metamorphic Process

What is the density of the Earth's core?

• 5.5 g/cc

• 3.5 g/cc

• 2.2 g/cc

• 11 g/cc