Earth's Layers and Composition

The video provides an overview of the Earth's structure, detailing its three main layers: the crust, mantle, and core. The crust is the outermost layer, varying in thickness and density, with oceanic and continental differences. The mantle, beneath the crust, is responsible for volcanic and seismic activities, with its upper part known as the asthenosphere. The core, composed of nickel and iron, is divided into a liquid outer core and a solid inner core. The video emphasizes the increasing density of materials as depth increases and concludes with an invitation to subscribe for more educational content.

What is the outermost solid part of the Earth called?

• Crust

• Asthenosphere

• Core

• Mantle

Which region of the Earth's crust is known to be the thickest?

• Oceanic crust

• Mariana Trench

• Continental crust

• Himalayan region

What is the upper portion of the mantle called?

• Inner core

• Lithosphere

• Outer core

• Asthenosphere

What is the combined thickness of the crust and upper mantle known as?

• Outer core

• Asthenosphere

• Inner core

• Lithosphere

Which layer of the Earth is responsible for volcanic and seismic activity?

• Lower mantle

• Upper mantle

• Crust

• Core

What is the state of the outer core?

• Plasma

• Gaseous

• Liquid

• Solid

What elements primarily make up the Earth's core?

• Silicon and oxygen

• Carbon and hydrogen

• Magnesium and aluminum

• Nickel and iron

What is the temperature range of the inner core?

• 5000 to 7000 degrees Celsius

• 4000 to 5000 degrees Celsius

• 2000 to 3000 degrees Celsius

• 1000 to 2000 degrees Celsius

What is the term used to refer to the core due to its composition?

• Asthenosphere

• Lithosphere

• Knife layer

• Mantle

What is the thickness of the Earth's inner core?

• 1200 kilometers

• 2300 kilometers

• 3500 kilometers

• 2900 kilometers