PHYSICS - Astrophysics - Waves and the Earth (S and P waves)

The video explores how earthquakes help us understand Earth's structure. It discusses the depths of the deepest mine and hole drilled, and how seismic waves provide insights into Earth's layers. P waves and S waves are explained, highlighting their travel through solids and liquids. The video concludes with the discovery of Earth's layered structure, including a solid inner core and a liquid outer core.

What is the depth of the deepest mine on Earth?

• 1 kilometer

• 9 kilometers

• 2.5 kilometers

• 4 kilometers

How deep is the deepest hole ever drilled into the Earth?

• 12 kilometers

• 22 kilometers

• 18 kilometers

• 28 kilometers

Which type of seismic wave travels the fastest?

• S waves

• P waves

• Surface waves

• Rayleigh waves

What is a characteristic of S waves?

• They are the fastest seismic waves.

• They travel through both solids and liquids.

• They are detected over most of the Earth's surface.

• They cause an up-and-down motion.

What does the P wave shadow zone suggest about the Earth's core?

• The core is entirely solid.

• The core is made of gas.

• The core is entirely liquid.

• There is a significant change in density.