DRAIN THE OCEANS!.

Slides:

Advertisements

Similar presentations

So what has caused the continents to drift ??

Advertisements

 Tectonic Plates – the massive, irregularly shaped slabs of rock that make up the Earth’s lithosphere  One plate cannot shift without affecting the.

1.1 Earth has several Layers.  Denser material sinks  Less dense material rises to the top.

Plate Tectonics Review

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.

Major Geological Events Caused by Plate Tectonics

The Structure of the Earth and Plate Tectonics

Seismic Waves Vibrations that travel through the Earth carrying the energy released during an earthquake Pressure The force exerted on a surface divided.

Bell Ringer Take out a sheet of paper, put your name on it. Write your answer to the questions. 1.What type of tectonic activity made Hawaii? 2.What activity.

Section 2: The Theory of Plate Tectonics

Plate Tectonics Evolution of the Earth.

 Composition: Silicon, Oxygen, and Aluminum  Types: › Continental Crust: solid & rocky outer layer › Oceanic Crust: thin & dense material.

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.

UNIT 3 EARTH SCIENCE RI_Z2Kgs&safety_mode=true&persist_s afety_mode=1&safe=active.

The Theory of Plate Tectonics. Tectonic Plates Tectonic Plates are pieces of lithosphere that move around on the Athenosphere. Plates range in size. Some.

Plate Tectonics. The Theory of Seafloor Spreading 1.On the ocean floor there are areas where the seafloor is getting bigger. 2.Researchers used sound.

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 Section 2 Section 2: The Theory of Plate Tectonics Preview Key Ideas How Continents Move Tectonic Plates Types of Plate Boundaries Causes.

Theory of Plate Tectonics “The Earth is like a cracked eggshell!”

1 6.2 The Theory of Plate Tectonics. 2 How is water in a pot that is held over a flame become heated throughout, even though the flame touches only the.

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 refers to the movements of plates (large segments of continents and ocean) around the Earth’s surface.  These land masses are seen.

Major Geological Events

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.

Convection currents in the mantle result in the movement of lithospheric plates. The motion and interactions of the plates can create patterns in the.

6.2 The Theory of Plate Tectonics

Section 2: The Theory of Plate Tectonics

LECTURE The pictures in this PowerPoint presentation are hyperlinked to a video.

Plate Tectonics Evolution of the Earth.

Plate Tectonics Movement of the Crust.

The Theory of Plate Tectonics

Plate Boundaries: Divergent, Convergent, and Transform

Unit 8 C: Plate Tectonics

Plate Tectonics.

Plate Tectonics.

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

Earthquakes and Volcanoes oh my!

Handout 3 Standard 2-2 Plate Tectonics.

Inside the Earth Study Guide.

PLATES AND TECTONIC MOVEMENT

Plate Tectonics Evolution of the Earth.

Theory of Plate Tectonics

Plate Tectonics.

9-3 Theory of Plate Tectonics

Earth’s Changing Structures

PART 1: The Theory of Continental Drift is a hypothesis that states the continents once formed a large, single landmass called Pangaea.

Theory of Plate Tectonics (1960) Earth’s lithosphere consists of rigid, but moving masses called tectonic plates.

Plate Tectonics.

Chapter 10 Plate Tectonics.

Section 10.2 Types of Plate Boundaries

Plate Tectonics The theory that the Earth’s lithosphere is divided into tectonic plates that move around on top of the asthenosphere.

Chapter 10 section 2 Plate Tectonics.

Plate Tectonic Study Guide

Plate Tectonics.

Theory of Plate Tectonics

Why will Florida be Farther from London in 30 millions years?

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.

Let’s review…. The earth lithosphere is broken into sections called tectonic plates. These plates float around on the asthenosphere. The magma in the.

Theory of Plate Tectonics (Part 1)

Unit 1 Vocab Earth Science Unit

Theory of Plate Tectonics (Part 1)

Theory of Plate Tectonics

Divergent Plate Boundaries

Science Plate Tectonics

Plate Boundaries: Divergent, Convergent, and Transform

Presentation transcript:

DRAIN THE OCEANS!

Underwater Geologic Features… If the Earth had no water, there would be massive underwater rock structures exposed that are much bigger than those found on land today. Examples: Mid-Ocean Ridges, Deep Ocean Trenches, Volcanos, Thermal Vents https://www.youtube.com/watch?v=K8blL9Ki2mQ

How do Scientist know? Scientist use an instrument called “Sonar” to map out structures that exist on the ocean floor. Sonar uses sound waves to “see” features.

Underwater Features Mid-ocean Ridge An underwater mountain chain that has magma and lava coming out of it. As the lava emerges it pushes each side of the sea-floor in opposite directions. This movement is called sea-floor spreading and is the main cause for the moving of continents as well as earthquakes. https://www.youtube.com/watch?v=ZzvDlP6xd9o

Plate Tectonics The theory that the surface of the Earth is broken into pieces like a puzzle and those pieces are slowly moving.

Underwater Features Trench When two plates crash (collide) one of the plates is “bent” downward creating a deep trench. The deepest trench in the world is called the Marianas Trench and it is 6.8 miles deep.

https://www.youtube.com/watch?v=r17kLJxJcwM

Underwater Features Volcanos (Hot Spots) - Single locations on Earth’s surface, mostly on ocean floor, where the crust is thin enough to allow a tube of magma to spit out lava.

Hot Spots Create Islands in the Oceans

Underwater Features Thermal Vents - Chimney stacks along the ocean floor that release steamy hot water from geothermal energy beneath the crust.

What is the cause for all these features? Convection of Magma -Beneath outer layer of Earth (crust) is another layer called the Mantle. -Within the mantle is hot magma that rises and sinks due to temperature and density differences. -This magma moves through cracks in the crust to the surface and creates the ocean floor volcanic features. https://www.youtube.com/watch?v=ryrXAGY1dmE

Plate Tectonic Boundaries and Ocean Floor Features Divergent Boundary (to separate): Mid-ocean Ridges Convergent Boundary (to collide): Trenches

How does density and temperature effect plate movement? Hotter material such as material in the earth’s mantle is less dense and rises. Cooler material in the earth’s mantle is more dense and sinks. As cooler material becomes hot again it rises Rising and sinking occurs in a continuous cycle This circular motion carries plates of the lithosphere along with it the continents move. This process is called convection currents!