Planet Earth

The video explains the structure of the Earth, including its layers: crust, mantle, outer core, and inner core. It discusses tectonic plates and their role in causing earthquakes. The concept of continental drift is introduced, explaining how continents were once connected. The video compares the depths of the Mariana Trench with the height of Mount Everest, illustrating the vastness of Earth's oceans. It concludes with a discussion on Earth's water coverage and the limited exploration of the oceans.

Which layer of the Earth is solid like a rock?

• Crust

• Mantle

• Outer Core

• Inner Core

What is the primary cause of earthquakes?

• Ocean currents

• Wind erosion

• Tectonic plates rubbing against each other

• Volcanic eruptions

How did scientists conclude that continents were once connected?

• By analyzing tectonic plate movements

• By studying ocean currents

• By measuring the Earth's magnetic field

• By finding similar fossils on different continents

If Mount Everest were placed in the Mariana Trench, what would happen?

• It would float

• It would be half submerged

• It would remain above water

• It would be completely submerged

What percentage of Earth's surface is covered by water?

• 29%

• 90%

• 71%

• 50%