Plate Tectonics. Objectives 1. Know the different tectonic plates 2. Understand how the tectonic plates move 3. Understand what happens at the different.

Slides:

Advertisements

Similar presentations

Do Now # 4 What is the difference between convergent, divergent, and transform boundaries?

Advertisements

Theory of Plate Tectonics

The Structure of the Earth and Plate Tectonics

Plate Tectonics Students will be able to describe how the lands and oceans are influenced by the flow of energy through the lithosphere. Presenter: Ask.

The Structure of the Earth and Plate Tectonics

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: – Core – Mantle – Crust Inner core Outer.

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

Plate Tectonics and the Structure of the Earth. The Structure of the Earth The Earth is made up of 3 main layers: Core Mantle Crust Inner core Outer Core.

Types of Plate Boundaries

What happens at tectonic plate boundaries?

Plate tectonics and plume tectonics by H. SAIBI 14 May, 2014.

Map Of The Plate Boundaries

The Structure of the Earth and Plate Tectonics

The Structure of the Earth and Plate Tectonics.  The Earth is made up of 3 main layers:  Core  Mantle  Crust 46.6% Oxygen; 27.7% Silica; 8.1% Aluminum;

The Structure of the Earth and Plate Tectonics. 2 Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer.

Plate Tectonics.

Tectonic Activity Plates. –Tectonic Plates –Convection Currents –Destructive Plate Boundaries –Constructive Plate Boundaries –Conservative Plate Boundaries.

Theory of Plate Tectonics Plate Tectonics Plate Boundaries Causes of Plate Tectonics.

Plate Tectonics Causes of Plate Tectonics Plate Boundaries.

Plate Tectonics.

Science - The Earth. WALT: Name the different layers of the earth.

The Structure of the Earth and Plate Tectonics. How do we know what the Earth is made of? Geophysical surveys: seismic, gravity, magnetics, electrical,

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

SWBAT 1. Explain how plate tectonics accounts for the Earth’s features. 1. Describe the three types of plate boundaries and geographic features associated.

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

Theory of Plate Tectonics Plate Tectonics Plate Boundaries Causes of Plate Tectonics.

The Earth’s Structure.

Plate Tectonics. What is Plate Tectonics? The Earth’s crust and upper mantle are broken into sections called plates Plates move around on top of the mantle.

Chapter 2: Plate Tectonics Theory of plate tectonics Proposed by Alfred Wegener Earth’s crust consists of plates that move or float on the mantle Movement.

Structure of the Earth The Earth is made up of 3 main layers: ______________.

PLATE TECTONICS AND BOUNDARIES. How do we know what the Earth is made of? Geophysical surveys: seismic, gravity, magnetics, electrical, Earth size and.

Convergent Plate Boundaries 10/6/15 7-3b pg. 178 IN: What do you think happens when tectonic plates collide? Put your DRW on the box.

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

Plate Tectonics. What is Plate Tectonics? The Earth’s crust and upper mantle are broken into sections called plates. Plates move around on top of the.

The Structure of the Earth and Plate Tectonics

1. What might have made this huge crack? 2. How could this crack (over time ) change the landscape of the Earth’s surface?

Plate Tectonics. The crust is broken into plates that float on the mantle. The crust is broken into plates that float on the mantle. Sometimes the plates.

Continental Drift Theory The hypothesis that Earth’s continents move on Earth’s surface. Wegner proposed this theory Sea Floor Spreading a process in which.

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

The Structure of the Earth and Plate Tectonics. How do we know what the Earth is made of? Geophysical surveys: seismic, gravity, magnetics, electrical,

Plate Boundaries Lithospheric Plates are pushed and pulled around by the underlying convection cells in the upper mantle (Asthenosphere).

What do these images have in common?. Sunset view of towering, snow-capped Mt. Everest, from the village of Lobuche (Solu- khumbu), Nepal Sunset view.

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

The Structure of the Earth and Plate Tectonics. Earth’s Systems Biosphere- Living organisms on Earth Atmosphere- Layers of gases surrounding Earth Hydrosphere-

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers:  Core  Mantle  Crust Inner Core Outer.

Plate Tectonics the movement of Earth.

Plate Tectonics Chapter 9. Theory of Plate Tectonics Plate Tectonics Plate Boundaries Causes of Plate Tectonics.

Tectonic Plate Boundaries and Their Effects

Plate Tectonics Video Clip of Continental Drift. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

Чулуун мандлын бүтэц,бүрэлдэхүүн. Дэлхийн дотоод бүтэц –Цөм –Манти –Газрын давхарга Дотоод цөм Гадаад цөм Манти Газрын давхарга.

Theory of Plate Tectonics

Theory of Plate Tectonics

A new theory that combined continental drift and seafloor spreading was developed known as the theory of Plate Tectonics.

Plate boundaries & convection currents

Questions... What is the lithosphere? What is the asthenosphere?

What happens at tectonic plate boundaries?

The Theory of Plate Tectonics

Theory of Plate Tectonics

Scientific Theory of Plate Tectonics

Theory of Plate Tectonics

The Structure of the Earth and Plate Tectonics. Structure of the Earth The Earth is made up of 3 main layers: –Core –Mantle –Crust Inner core Outer core.

Theory of Plate Tectonics

Plate Tectonics.

Theory of Plate Tectonics

Presentation transcript:

Plate Tectonics

Objectives 1. Know the different tectonic plates 2. Understand how the tectonic plates move 3. Understand what happens at the different plate boundaries

What is a plate?

A plate is a rigid section of the earth’s crust which 'floats' on the semi molten mantle. PLATES ARE MADE OF EITHER OCEANIC CRUST OR OCEANIC AND CONTINENTAL CRUST. NO PLATE IS MADE OF ONLY CONTINENTAL CRUST.

How do the plates move?

These plates are moved by the convection currents that occur within the mantle.

Plate Boundaries / Margins The plates have recognized boundaries, where they are either moving towards one another, moving away from one another or moving past one another.

Objectives 1. Know the different tectonic plates 2. Understand how the tectonic plates move 3. Understand what happens at the different plate boundaries

Three types of plate boundary Divergent (constructive) Convergent (destructive) Transform (conservative)

Convergent Plate Boundary There are three styles of convergent plate boundaries ◦Continental-continental crust ◦Continental-oceanic crust ◦Oceanic-oceanic crust

Continental-Continental Forms Fold mountains, e.g. European Alps, Himalayas

Himalayas India used to be an island, but about 15 million years ago it crashed into Asia (see map). As continental crust was pushing against continental crust the Himalayan mountain belt was pushed up. Margins/Convergent/Continental-Collision

Continental-Oceanic Crust

Oceanic crust subducts underneath the continental crust Oceanic crust heats up as it as it subducts and melts The moltan rock is magma and rises forming volcanoes e.g. The Andes in South America Subduction Margins/Convergent/Oceanic-continental

Oceanic-Oceanic Plates When two oceanic plates collide, one runs over the other which causes it to sink into the mantle forming a subduction zone. The subducting plate is bent downward to form a very deep depression in the ocean floor called a trench. The worlds deepest parts of the ocean are found along trenches. Margins/Convergent/Oceanic-oceanic-collision

The Mariana Trench is 11Km deep!

Divergent Boundaries

Iceland Margins/Divergent/Mid-Atlantic-Ridge Iceland has a divergent plate boundary running through its middle

Transform Boundaries Above: View of the San Andreas transform fault Margins/Conservative/San-Andreas-Fault

Summary The Earth is made up of 3 main layers (core, mantle, crust) On the surface of the Earth are tectonic plates that slowly move around the globe Plates are made of crust and upper mantle (lithosphere) There are 2 types of plate There are 3 types of plate boundaries Volcanoes and Earthquakes are closely linked to the margins of the tectonic plates