3. Tectonic Hazards: CGP Tectonic Plates

What is a tectonic plate?

• A land mass which makes up a geographical continent

• Any land mass, which forms part of of the Pacific Ring of Fire

• A large slab of the Earth's crust

What are the two names of a place where tectonic plates meet?

• Barrier

  Frontier

• Boundary

  Margin

• Convergence

  Confluence

Why do tectonic plates move?

• Tectonic plates move due to deep seated volcanic action below the oceans

• Tectonic plates move due to differences in the density of two plates

• Tectonic plates move due to gravitational forces

• Tectonic plates move as they float on the Earth's mantle

A constructive margin is where two tectonic plates....

• converge on one another

• diverge away from one another

Why is the term constructive margin used?

• As the plates converge the margins are lifted to form fold mountains

• As the plates diverge the magma rises from the mantle to fill the gap and cools, creating a new crust.

• As the plates pass each other, rifts and plateaus are formed along their boundaries

What type of plate margin is formed where an oceanic plate meets a continental plate?

• Conservative plate margin

• Constructive plate margin

• Destructive plate margin

Which of the plates i.e. oceanic and continental is more dense than the other?

• Continental plate

• Oceanic plate

What physical feature is created at a destructive plate margin when the denser plate is forced down into the mantle and destroyed?

• A rift valley

• An escarpment

• An ocean trench

• A volcanic rim

What happens at a conservative margin ?

• Two plates move past each other

• Two plates move apart from each other

• Two plates move towards each other

What are the two ways plates can move past each other at a conservative margin?

• Sideways past each other in opposite directions.

  In the same direction at different speeds.

• In the same direction at the same speed.

  One sinking below the other at different speeds.

• Smoothly where structures are similar.

  Sticking where structures are dissimilar