Show:
Discoveries that Support Continental Drift
Theory of Plate Tectonics
Layers of the Earth
Vocabulary
Miscellaneous
100

In what year was continental drift proposed?

When is 1912

100
These plate boundaries slide past each other and often produce earthquakes
What is transform plate boundaries
100
Convection is a process that occurs in which of earth's layers?
What is the mantle
100
Where two plates move away from each other.
What is divergent boundary
100

The hottest layer of the Earth

What is inner core
200

What causes plates to sink below another?

What is density

200
These plate boundaries are located on the ocean floor, creating sea-floor spreading
What are divergent boundaries
200

The layer in which we live.

What is crust

200
The movement of material due to differences in density.
What is convection
200

This explains what is happening.

What is a theory

300
What two features form at convergent plate boundaries.
What are volcanoes and mountains.
300
This boundary results when 2 plates push into one another either causing the crust to be pushed up or causing one plate to sink beneath it.
What is a convergent boundary
300
Tectonic plates are located on this layer.
What is the lithosphere
300
The continents joined in a single landmass
What is Pangaea
300

A prediction

What is a hypothesis

400

When the denser plate goes under another (subducts), the plate gets turned into ________________ in the mantle and rises back up.

What is magma

400

Explain how subduction occurs.

Subduction occurs as a result of convergent boundaries. The dense oceanic crust goes under the continental crust.

400

Nickel and iron are two substances that make up the Earth's _____________.

What is core

400

The process where molten rock from inside the Earth rises through the cracks in the ridges, cools and forms new oceanic crust.

What is sea-floor spreading/divergent boundary

400

This describes how something occurs.

What is a law

500

The geological structure that resulted when India broke apart from Gondwana and crashed into Eurasia.

What is the Himalaya Mountain Range

500

Three theories that explain how tectonics plates move are slab pull, ridge push and __________________________.

What is convection

500

This crust is denser than the other.

What is oceanic crust

500

Two reasons why convection currents occur in the mantle.

What is temperature and density
500

The name of the geologist who proposed continental drift

Who is Alfred Wegener