Quiz on Earth's Layers and Rocks

The earth is made up of layers arranged like:

• Apple

• Onion

• Mango

• Orange

The uppermost layer of the earth’s surface is called:

• Mantle

• Crust

• Core

• Lithosphere

The thickness of the continental crust is about:

• 5 km

• 15 km

• 35 km

• 50 km

The oceanic crust is about how thick?

• 5 km

• 15 km

• 35 km

• 70 km

Continental crust is made mainly of:

• Silica and magnesium

• Silica and alumina

• Nickel and iron

• Sand and clay

Oceanic crust is made mainly of:

• Silica and alumina

• Silica and magnesium

• Nickel and iron

• Coal and petroleum

The mantle extends up to:

• 35 km

• 1000 km

• 2900 km

• 6371 km

The core has a radius of about:

• 1500 km

• 2000 km

• 2500 km

• 3500 km

The core is mainly made of:

• Silica and magnesium

• Nickel and iron

• Coal and petroleum

• Clay and marble

The term “nife” refers to:

• Nickel and ferrum (iron)

• Nitrogen and feldspar

• Nickel and feldspar

• Nitrate and ferrum