Plate Tectonics and Seafloor Spreading

Write your guess in the chat.

Multiple Choice

What's the BEST answer?

• to determine how the rocks formed on the different continents

• to predict how the continents might look in the future with continued plate movement

• to explain the process of how the continents are in different locations today than in the past

• to support the theory that these continents were once joined together but then moved apart over

  time

Multiple Choice

Choose the Convergent Plate Boundary:

Multiple Choice

Choose the Divergent Plate Boundary:

Multiple Choice

Choose the Transform Plate Boundary:

Seafloor Spreading

(Video)

• Divergent plates pull apart

• Magma rises to fill the gap at the "ridge"

_{Mid-Atlantic Ridge}

Multiple Choice

Which rocks are the youngest in the ocean?

• The ones at the mid-ocean ridge

• The ones furthest from the mid-ocean ridge

Multiple Choice

Why are the rocks in the center younger?

• The plates are converging and destroying rock

• The plates are diverging and leaving space for magma to rise

Multiple Choice

What do we know about rocks the same age on opposite sides of the ocean?

• They are going to move together and match up

• They are dormant volcanoes that need to be watched closely by scientists

• They used to be touching before the plates spread apart

• It is a complete coincidence that they are the same age