Earth's Interior and Missing Elements

The video explores the complex structure of Earth's interior, challenging the notion of neat layers. It highlights the discovery of a mountain range between the upper and lower mantle, which may hold clues to Earth's missing elements. Seismic waves from earthquakes help map these hidden features. The study suggests that these mountains could be ancient oceanic crust slabs, potentially containing Earth's hidden elements. The video concludes by emphasizing the complexity of Earth's structure and invites viewers to explore further.

What unexpected geological feature was discovered between the upper and lower mantle?

• A vast desert

• A large ocean

• A mountain range

• A deep canyon

Why is the lower mantle considered a prime suspect for hiding Earth's missing elements?

• It is easily accessible

• It is the only unexplored area

• It is close to the Earth's surface

• It is rich in visible minerals

How do scientists study the lower mantle without drilling?

• By measuring seismic waves

• By analyzing volcanic eruptions

• By using satellite imagery

• By observing surface rocks

What did the 2019 study reveal about the lower mantle boundary?

• It is colder than expected

• It is made of liquid magma

• It contains large mountains

• It is completely smooth

What is the height of the mountains found in the lower mantle?

• 10 to 20 kilometers

• 5 to 10 kilometers

• 50 to 60 kilometers

• 30 to 40 kilometers

What is the proposed origin of the rugged mountains in the lower mantle?

• Tectonic plate collisions

• Meteorite impacts

• Ancient oceanic crust

• Volcanic eruptions

What is the significance of the ruggedness of the lower mantle mountains?

• It proves the mantle is liquid

• It shows recent geological activity

• It suggests a chemical change

• It indicates temperature variations

What might these ancient slabs in the lower mantle block?

• Volcanic eruptions

• Mantle circulation

• Tectonic plate movement

• Seismic wave transmission

What does the discovery of mantle mountains suggest about Earth's structure?

• It is uniformly hot

• It is more complex than thought

• It is perfectly layered

• It is mostly liquid

What other feature in the mantle further disproves the idea of neat concentric circles?

• Large lakes

• Gigantic blobs

• Deep trenches

• Vast plains