Tectonic Plates and Earth's Layers

This video tutorial provides a five-minute geography lesson on tectonics, focusing on the Earth's layers and their interactions. It covers the inner core, outer core, mantle, and crust, explaining their composition and role in tectonic processes. The video also discusses plate tectonics, including the movement of plates due to convection currents, and the differences between oceanic and continental crust. The lesson concludes with a brief mention of homework for further revision.

What is the innermost layer of the Earth called?

• Inner Core

• Crust

• Outer Core

• Mantle

Which layer of the Earth is known for being a liquid metal?

• Inner Core

• Crust

• Outer Core

• Mantle

What is the primary composition of the Earth's mantle?

• Gaseous elements

• Molten rock

• Liquid water

• Solid rock

How is the Earth's crust divided?

• Into tectonic plates

• Into gaseous sections

• Into liquid layers

• Into one solid piece

What process causes tectonic plates to move?

• Solar winds

• Convection currents

• Magnetic fields

• Gravitational pull

At what speed do tectonic plates typically move?

• Centimeters per minute

• Millimeters per year

• Kilometers per hour

• Meters per second

What happens to the oceanic plate during subduction?

• It remains unchanged

• It melts

• It rises

• It becomes thicker

Which type of crust is generally older?

• Oceanic crust

• Neither has age

• Continental crust

• Both are the same age

Why is the continental crust less dense than the oceanic crust?

• It has less sediment

• It is made of liquid

• It is thicker

• It is newer

What is the focus of the next lesson mentioned in the conclusion?

• Mountain formation

• Volcanoes

• Earthquakes

• Plate boundaries