Layers of the Earth Quiz from the youtube video

What is the average thickness of the crust?

• 25-30 kilometers

• 20-25 kilometers

• 15-20 kilometers

• 10-15 kilometers

Which type of crust is thicker and less dense?

• Oceanic crust

• Continental crust

• Mantle

• Outer core

What is the composition of oceanic crust mainly made of?

• Granite

• Basalt and Gabro

• Iron and Nickel

• Silicates

What is the temperature range of the mantle near its boundary with the core?

• 4500-5500 degrees Celsius

• 5200 degrees Celsius

• 100-600 degrees Celsius

• 1000-3700 degrees Celsius

What is the temperature range of the inner core?

• 5200 degrees Celsius

• 1000-3700 degrees Celsius

• 100-600 degrees Celsius

• 4500-5500 degrees Celsius

What is the composition of the inner core mostly made of?

• Iron and Nickel

• Granite

• Basalt and Gabro

• Silicates