Geological Features and Plate Tectonics

The video discusses divergent boundaries in plate tectonics, focusing on rift valleys and sea floor spreading. Rift valleys occur when continental plates move apart, exposing magma and forming volcanoes. Sea floor spreading involves oceanic plates being pulled apart by convection currents, creating new ocean floor and underwater volcanoes. The Mid-Atlantic Ridge is a key example of this process, with Iceland being a notable location where these phenomena are visible.

What are the three types of plate boundaries discussed in the video?

• Divergent, transform, and collision

• Divergent, convergent, and transform

• Subduction, collision, and transform

• Convergent, transform, and subduction

What geological feature is formed when two continental plates move apart?

• Subduction zone

• Mountain range

• Rift valley

• Ocean trench

Which of the following is an example of a rift valley?

• The Himalayas

• The Great African Rift Valley

• The Rocky Mountains

• The Andes

What happens to magma when two continental plates move apart?

• It creates a mountain

• It forms a trench

• It rises to the surface

• It cools down

Where is the newest ocean floor typically found?

• Near the center of the ocean

• Near the edges of the ocean

• Near the oceanic trenches

• Near the continental shelves

What geological feature is associated with sea floor spreading?

• Volcanic island arc

• Oceanic trench

• Subduction zone

• Mid-ocean ridge

What evidence supported the theory of continental drift?

• The presence of similar fossils on different continents

• The discovery of the Mid-Atlantic Ridge

• The age difference of ocean floor near the center and edges

• The alignment of mountain ranges across continents

What is a significant geological feature of Iceland due to its location?

• Desert landscapes

• Geothermal activity

• Tropical rainforests

• Large river systems

How does Iceland benefit from its geothermal activity?

• By using it for agriculture

• By exporting geothermal energy

• By generating electricity

• By creating new land

What is the significance of the Mid-Atlantic Ridge in Iceland?

• It is a major tourist attraction

• It is a site for geothermal energy production

• It provides a source of fresh water

• It causes frequent earthquakes