Plate Tectonics

What is asthenosphere?

A plastic-like layer.

Subduction Zone

A region of the Earth's crust where tectonic plates meet.

What is lithosphere?

A ridged layer of earth.

What happens when pates slide past each other?

A transform fault is formed or and Earthquake occurs.

What is Alfred Wegener notice about all the outlines of the continents?

All the continents fit together like a puzzle.

What type of plate boundary occurs at the Red Sea (African Rift Valley)?

Continental Divergent

What type of convergent plate boundary is found along the southern part of the Himalayas where the plate with the country of India at its northern end has smashed itself against Asia.

Continental!!

What causes plates to move?

Convection Currents

Where is new crust formed?

Divergent Plate Boundaries.

What did Wegener notice about fossils on different continents?

Fossils of the same species were found on South America or Africa.

What was Pangaea?

Large Landmass

What type of convergent plate boundary is found along the west coast of South America where there is an ocean trench offshore and the Andes Mountains onshore?

Ocean

What are three types of convergent plate boundaries.

Ocean- Continental, Ocean- Ocean, Continental- Continental

What type of convergent plate boundary is found in the western Pacific Ocean eat of Australia where the Mariana's Trench is a much as 35,000 feet below sea level?

Ocean-Convergent

Which is denser Oceanic or Continental Crust?

Oceanic

What type of convergent plate boundary creates a volcanic island arc system?

Oceanic- Convergent

Mid Ocean Ridge

Place where new sea floor forms, resembles an underwater mountain range.

Where are most of the world's earthquakes and volcanoes located?

Plate Boundaries.

Divergent plate boundaries.

Plates Separate and Creates Ridges and Valleys

Describe Transform Plate Boundaries.

Slide Past.

What did Alfred Wegner propose after looking a rock sequences on different continents?

The continents were connected when sections of the rock stuctures formed.

What is convection current?

The driving force of plate tectonics.

What is the theory of plate tectonics

The outer rigid layer of the earth is divided into plates

What type of plate boundary occurs along the western part of California running from San Francisco to Baja California?

Transform

What is Continental Drift?

When continents move horizontally to their current positions.

What is a rift zone?

When plates of earths crust move away from each other.

What type of plate boundary is located nearly halfway between South America and Africa.

ocean

Fault

surfaces along which rocks break and move