22.5. Plate Movement Mechanisms

Try these first

1. 1.

   What is mantle convection?

   Hint

   Think about how heat affects movement.

2. 2.

   What happens to the denser oceanic plate in slab pull?

   Hint

   Consider the term 'subducts'.

3. 3.

   What is the primary driver of mantle convection?

   • Gravity
   • Heat from Earth's interior
   • Pressure

   Hint

   Consider what causes heat rise within the Earth.

4. 4.

   True or False: Slab pull occurs when a continental plate sinks beneath an oceanic plate.

   • True
   • False

   Hint

   Think about which plate is denser.

5. 5.

   If the Pacific Plate is moving northwest at a rate of 10 cm/year, how does slab pull impact its movement compared to mantle convection?

   Hint

   Consider how both mechanisms might contribute to speed.

6. 6.

   Evaluate the consequences of ridge push at the Mid-Atlantic Ridge. How does it contribute to seismic activity?

   Hint

   Think about the relationship between movement and stress.