Topography and the Earth: Inside the Earth

The video explores the structure of the Earth, starting with the surface and moving deeper into its layers. It explains that as one digs deeper, the chemical composition, density, pressure, and temperature of the materials change. These changes are significant as they provide insights into the Earth's internal structure.

What is the relative depth of a quarry compared to the Earth's layers?

• Moderately deep

• Very deep

• Extremely deep

• Quite shallow

What would you first notice if you dug towards the Earth's center?

• The color of the soil changes

• The chemical composition changes

• The sound of digging changes

• The air becomes thinner

As you dig deeper into the Earth, what happens to the density of materials?

• It remains constant

• It increases

• It fluctuates

• It decreases

What happens to the pressure as you move closer to the Earth's center?

• It disappears

• It increases

• It remains the same

• It decreases

Which of the following increases along with pressure as you approach the Earth's center?

• Sound

• Light

• Temperature

• Humidity