He hypothesized that all continents were once part of a supercontinent called ________.

What are the evidences of Wegener's Theory?

This fossil was a woody plant that had very heavy seeds that could not be moved by the wind to far distances.

What do you call the marks that glaciers leave as they slowly move?

What are Tectonic Plates/

We can use rocks and mountain ranges as evidence for continental drift theory.

What was the objection that critics had about Wegener's continental drift theory?

He published 'The History of Ocean Basins" in 1962. This theory later became known as Seafloor Spreading.

He proposed that Earth's crust was divided into several plates that fits together like puzzle along the cracks of the lithosphere.

It is the process which heat is transferred by the movement of a heated fluid.

It happens because mid-ocean ridges lies at a higher elevation than the surrounding abyssal plains or seafloor causing the gravitational force to act on the rocks at the ridge.

It is the pulling force exerted by colder, denser plate plunging into the mantle due to its own weight.

Convection happens because of changes in ________ and ________ of a material

What is the source of the heat that causes convection to happen?

In what layer of the Earth does convection happen?

Identify the plate boundary

Identify the image

Identify the image

Identify the image

Which is the Oceanic-Oceanic Plate Convergence

Which is the continental-continental plate convergence?

Which is the Oceanic-Continental Plate Convergence?