Understanding Earth's Structure

The video explains Earth's structure, starting with its diameter and the limitations of direct exploration. It describes the crust as a thin outer layer of solid rock, followed by the mantle, which constitutes 80% of Earth's volume and has both rigid and partially melted regions. Finally, the core is discussed as a dense, metal-rich area with extremely high temperatures, contributing to the heat that affects the crust.

What is the maximum depth that drilling has reached into the Earth?

• 10 kilometers

• 25 kilometers

• 15 kilometers

• 20 kilometers

How do scientists gather information about the Earth's interior?

• By drilling deep into the Earth

• By studying volcanic eruptions

• By analyzing earthquake data

• By using satellite imagery

What is the Earth's crust primarily composed of?

• Gaseous elements

• Solid rock

• Liquid magma

• Metallic minerals

What percentage of Earth's volume does the mantle occupy?

• 50%

• 80%

• 60%

• 70%

What is the temperature at the Earth's core?

• 6,000 degrees Celsius

• 3,000 degrees Celsius

• 4,000 degrees Celsius

• 5,000 degrees Celsius

What is the primary composition of the Earth's core?

• Solid rock

• Gases

• Molten lava

• Metals