Plate Tectonics and Geological Features

The video explores constructive plate boundaries, where tectonic plates move apart, forming new crust. It covers oceanic-oceanic boundaries, like the Mid-Atlantic Ridge, where volcanic activity and earthquakes occur. It also discusses continental-continental boundaries, such as the East African Rift Valley, where rift valleys form. The video explains the processes and landforms associated with these boundaries, highlighting examples like Iceland and the East African Rift.

What is another name for constructive plate boundaries?

• Transform plate boundaries

• Divergent plate boundaries

• Convergent plate boundaries

• Subduction zones

What happens to the lithosphere at oceanic-oceanic boundaries?

• It thins and stretches

• It remains unchanged

• It thickens and compresses

• It subducts beneath another plate

Why do earthquakes occur at oceanic-oceanic boundaries?

• Due to volcanic eruptions

• Because of transform faults

• As a result of subduction

• Because of mountain building

What is a transform fault?

• A fault where one plate moves over another

• A fault where two plates slide past each other

• A fault where two plates move away from each other

• A fault where two plates move towards each other

What feature is formed when continental crust is stretched?

• Rift valley

• Mountain range

• Trench

• Ocean ridge

What eventually happens to a rift valley?

• It fills with lava

• It becomes a desert

• It forms a new ocean

• It becomes a mountain range

Which plates are involved in the East African Rift Valley?

• Indian, Australian, and Antarctic plates

• Eurasian, North American, and Pacific plates

• Arabian, Nubian, and Somalian plates

• South American, African, and Nazca plates

What is a significant geological feature of the East African Rift Valley?

• Deep ocean trenches

• High mountain ranges

• Volcanic activity and lakes

• Desert landscapes

What is the future implication of the East African Rift Valley?

• It will merge with another continent

• It will become a mountain range

• It will form a new ocean

• It will become a desert

What is the main difference between oceanic and continental crust separation?

• Oceanic crust forms mountains, continental forms valleys

• Oceanic crust forms valleys, continental forms mountains

• Oceanic crust forms trenches, continental forms ridges

• Oceanic crust forms ridges, continental forms rift valleys