Earth's Layers and Composition

The video tutorial explains the layers of the Earth's geosphere, comparing them to a soft-boiled egg. It details the chemical composition of the core, mantle, and crust, and describes the physical properties of the inner and outer core, mesosphere, asthenosphere, and lithosphere. The tutorial highlights the differences in density and composition that affect seismic wave travel, and concludes with a summary of the key points.

What part of a soft-boiled egg is analogous to the Earth's core?

• Egg membrane

• Egg yolk

• Egg white

• Eggshell

Which element is most abundant in the Earth's core?

• Oxygen

• Nickel

• Sulfur

• Iron

What is the main component of the Earth's mantle?

• Silicon dioxide

• Magnesium oxide

• Aluminum oxide

• Calcium carbonate

What is the primary rock type found in the oceanic crust?

• Gabbro

• Granodiorite

• Basalt

• Peridotite

What is the name of the discontinuity between the Earth's mantle and core?

• Conrad discontinuity

• Gutenberg discontinuity

• Mohorovičić discontinuity

• Lehmann discontinuity

What causes the Earth's magnetic field?

• The rotation of the Earth

• The flow of molten iron in the outer core

• The presence of iron in the crust

• The movement of tectonic plates

Which layer of the geosphere is known for its high plasticity?

• Asthenosphere

• Inner core

• Mesosphere

• Lithosphere

What is the primary characteristic of the mesosphere?

• Fluid state

• High plasticity

• High strength

• Low temperature

Which layer is included in both the chemical and physical classifications of the geosphere?

• Core

• Crust

• Mantle

• Asthenosphere

How are the chemical layers of the geosphere arranged?

• By age

• By composition

• By physical state

• By temperature