Structure of the Earth

What is the main difference between oceanic and continental crust?

• Oceanic crust is thicker and less dense than continental crust.

• Oceanic crust is thinner and denser than continental crust.

• Oceanic crust is the same thickness as continental crust.

• Oceanic crust is primarily composed of granite, while continental crust is composed of basalt.

What is the significance of the mantle in Earth's structure?

• It is the thinnest layer of the Earth.

• It is the thickest layer and is involved in tectonic movements.

• It is primarily composed of liquid water.

• It is the outermost layer that protects the Earth from solar radiation.

What are tectonic plates?

• Large sections of the Earth's crust that move and interact.

• Small fragments of the Earth's surface that remain stationary.

• Layers of the atmosphere that affect weather patterns.

• Solid rocks found deep within the Earth's mantle.

What is the process by which the Earth's crust is formed?

• Plate tectonics and volcanic activity.

• Weathering and erosion.

• Glacial movement.

• Oceanic trench formation.

What is the state of matter of the outer core?

• Solid

• Gas

• Liquid

• Plasma

What is the solid metal layer at the center of the Earth?

• Outer core

• Mantle

• Inner core

• Crust

What is the liquid metal layer that surrounds the Earth's inner core?

• Outer core

• Inner core

• Mantle

• Crust

What is the theory of continental drift?

• The hypothesis that continents have moved over geological time.

• The idea that continents are fixed in place and do not move.

• The theory that ocean currents are responsible for the movement of continents.

• The concept that continents were once part of a single landmass and have since separated.

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

• Approximately 2,000 to 3,000 degrees Celsius

• Approximately 4,000 to 5,000 degrees Celsius

• Approximately 6,000 to 7,000 degrees Celsius

• Approximately 1,000 to 2,000 degrees Celsius

Which portion of the crust is thicker, continental or oceanic?

• Continental

• Oceanic

• Both are equal

• Neither is thicker