2.1 Earth's Interior and Plate Tectonics

Which layer of Earth is the thinnest and forms the surface we live on?

• Mantle
• Outer Core
• Crust
• Inner Core

What primary process drives movement within the Earth's mantle?

• Radioactive explosion
• Thermal convection
• Magnetic field generation
• Tectonic plate sliding

What is the primary energy source generating heat deep within Earth's interior?

• Solar radiation
• Volcanic activity
• Radioactive decay
• Atmospheric friction

Which layer of Earth generates the planet's magnetic field?

• Inner Core
• Outer Core
• Mantle
• Crust

At approximately what temperature is Earth's inner core?

• 3,500°C
• 5,700°C
• 2,200°C
• 4,800°C

What causes less dense materials to rise in Earth's interior?

• Gravitational pressure
• Magnetic attraction
• Higher temperature
• Chemical reactions

Which type of plate boundary involves plates moving apart?

• Convergent
• Transform
• Divergent
• Subductive

What method do scientists primarily use to study Earth's interior structure?

• Direct drilling
• Satellite imaging
• Seismic wave analysis
• Thermal mapping

What are tectonic plates composed of?

• Liquid rock
• Molten metal
• Lithosphere
• Asthenosphere

Which layer of Earth is the largest by volume?

• Crust
• Inner Core
• Outer Core
• Mantle