Earth's Layers Quiz

What is the average temperature of the earth's crust?

• 10°C

• 40°C

• 22°C

• 30°C

Which layer of the earth is about 2900 km thick and makes about 85% of the earth's weight?

• Mantle

• Crust

• Atmosphere

• Core

What is the composition of the earth's inner core?

• Iron and Oxygen

• Iron and Nickel

• Silicon and Magnesium

• Aluminium and Sulphur

Which layer of the earth is mainly made of granite and is older than oceanic crust?

• Upper Mantle

• Lower Mantle

• Continental Crust

• Oceanic Crust

What is the temperature range of the earth's outer core?

• 3000°C

• 1400°C - 3000°C

• 5000°C - 6000°C

• 4000°C - 6000°C

Which scientist discovered that the earth has a solid inner core inside a molten outer core?

• Hans

• Inge Lehmann

• Otto Lidenbrock

• Jules Verne

Which layer of the earth's atmosphere blocks the earth from the sun's incoming UV rays?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

Which layer of the Earth makes up the smallest percentage of its total volume?

• Crust

• Mantle

• Inner Core

• Outer Core