The Earth’s Layers

The video explains the four layers of the Earth: crust, mantle, outer core, and inner core. The crust is the thin outer layer, mainly composed of rock. Beneath it lies the mantle, the thickest layer, which is semi-solid and causes tectonic plate movement. The core is divided into a liquid outer core and a solid inner core, both primarily made of iron and nickel. The core generates Earth's magnetic field. The characteristics of these layers significantly impact Earth's surface processes.

Which layer of the Earth is the outermost and thinnest?

• Outer Core

• Mantle

• Crust

• Inner Core

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

• Iron and Nickel

• Water and Air

• Rock

• Sand

What causes the movement of the Earth's tectonic plates?

• The gravitational pull of the moon

• The rotation of the Earth

• The Earth's magnetic field

• The movement of the mantle

What is the main composition of the Earth's outer core?

• Iron and Nickel

• Silicon and Oxygen

• Magnesium and Aluminum

• Carbon and Hydrogen

What is the estimated temperature of the Earth's inner core?

• 10,000 degrees Fahrenheit

• 20,000 degrees Fahrenheit

• 5,000 degrees Fahrenheit

• 13,000 degrees Fahrenheit