Earth's Interior & Seismic Waves Study Guide

What is the outermost layer of the Earth called?

• Core

• Mantle

• Lithosphere

• Crust

Which type of crust is thicker and less dense?

• Oceanic Crust

• Continental Crust

• Core

• Mantle

What is the main composition of the Earth's core?

• Basalt

• Iron and Nickel

• Granite

• Silicates

Which layer of the Earth is known for being 'plastic-like'?

• Lithosphere

• Asthenosphere

• Inner Core

• Mesosphere

What is the only liquid layer of the Earth?

• Inner Core

• Outer Core

• Mantle

• Crust

Which seismic wave arrives first during an earthquake?

• Surface Waves

• Shadow Waves

• P-Waves

• S-Waves

What type of seismic wave can travel through solids, liquids, and gases?

• Surface Waves

• Shadow Waves

• P-Waves

• S-Waves

Which seismic wave is stopped by liquids?

• Shadow Waves

• Surface Waves

• S-Waves

• P-Waves

What is the main evidence that the outer core is liquid?

• Seismic Reflection

• P-Wave Shadow Zone

• S-Wave Shadow Zone

• Surface Waves

What creates the Earth's magnetic field?

• Lithosphere

• Asthenosphere

• Movement of liquid metal in the outer core

• Inner Core