Plate Boundaries

What are the main types of plate boundaries?

• Convergent, Divergent, Transform

• Convergent, Subductive, Transform

• Divergent, Subductive, Transform

• Convergent, Divergent, Subductive

What type of boundary is formed when the oceanic Juan de Fuca plate subducts under the continental North American Plate?

• Divergent Boundary

• Convergent Boundary

• Transform Boundary

• Passive Margin

What occurs when two oceanic crust plates collide?

• The plates move apart, forming a ridge.

• The older, denser plate subducts, forming a trench.

• The plates slide past each other, causing earthquakes.

• The plates remain stationary, creating a plateau.

Where are the deepest parts of the ocean typically found?

• Along ridges

• Along trenches

• In the middle of the ocean

• Near the shore

What does the concept of isostasy refer to?

• The movement of tectonic plates

• The equilibrium of the Earth's crust on a dense mantle

• The formation of mountains

• The erosion of rocks

What occurs when a load is removed from the Earth's crust?

• The crust will sink

• The crust will rise

• The crust will remain unchanged

• The crust will contract

What happens to the crust in areas of intense tectonic activity like mountain ranges?

• The crust becomes thinner and sinks.

• The crust thickens and floats higher in the mantle.

• The crust remains unchanged.

• The crust melts completely.

What is the process that occurs as the rock in the seafloor ages?

• It becomes less dense and rises.

• It cools, becomes denser, and is buried under sediments.

• It heats up and becomes less dense.

• It remains unchanged.

What type of boundary is represented by the separation of the North American Plate and the Eurasian Plate in Iceland?

• Convergent Boundary

• Divergent Boundary

• Transform Boundary

• Subduction Zone

What can continental rifting eventually lead to?

• Formation of new ocean basins or large-scale valleys

• Creation of mountain ranges

• Formation of deserts

• Development of coral reefs