Sonar and the beginning of seafloor spreading By: Vanessa and Micaela.

Slides:

Advertisements

Similar presentations

Sea Floor Spreading and Continental Drift

Advertisements

Check your notes for key ideas!

Plate Tectonics Review

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.

Section 4 Sea-Floor Spreading

THIS IS With Host... Your Earth’s Interior Convection Currents Drifting Continents Sea-Floor Spreading Theory of Plate Tectonics.

What type of boundary is represented here?

Chapter 4 Review Plate Tectonics A winning effort begins with preparation. Joe Gibbs Joe Gibbs.

SEA-FLOOR SPREADING TXT: PG. 97 CHAPTER 3, SECTION 4.

Plate Tectonics.

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

Continental Drift Theory

Plate Tectonics.

Evidence of Seafloor Spreading By: April Carlisle and Stephen Loucks.

Awesome Links….copy and paste the URL’s

Plate Tectonics Seafloor Spreading. Plate Tectonics 4 – Name the four main layers of the earth from inside to outer most layer. 3 – Name the three physical.

3.2 Sea-Floor Spreading. Convection Currents cause the sea floor to spread.

Sea-Floor Spreading.

The Theory of Seafloor Spreading. Seafloor Bathymetry Creating Maps of the Ocean Floor Scientists were able to map the ocean floor using sonar, an Echo-

Mid-Ocean Ridge Is an undersea mountain chain that is part of a long system of mountains that winds beneath Earth’s oceans.

Earth’s Moving Continents Ch. 5, Lesson 2 Part 1.

THE USE OF SONAR, AND THE THEORY OF SEAFLOOR SPREADING. By: Rishon Pryce, Kaylee French Period – 6 09/21/15.

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

I can: describe what happens during Sea Floor Spreading DO NOW: What is a Mid- ocean Ridge?

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.

Sea-Floor Spreading. Introduction Tube Worms - live in the Pacific Ocean about one mile deep near the hydrothermal vents.

Bellringer What three specific types of evidence did Wegener study that led to him creating the idea that the continents had moved?

Earth’s Structure and Pangaea. Review Inside the Earth The Earth has 4 main layers. 1.Crust (rock) 2.Mantle (rock) 3.Outer Core (metal) 4.Inner Core (

The oceans are widening along the mid-ocean ridges.

Ch5 Sec4 Sea-Floor Spreading. Key Concepts What is the process of sea-floor spreading? What is the evidence for sea-floor spreading? What happens at deep-ocean.

Unit 6 Plate Tectonics corresponds with Ch. 10 in the book Mandy Ennis Meeks Baldwin Arts and Academics Magnet School.

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.

Plate Tectonics. The Theory of Plate Tectonics Plate Tectonics: Explains how large pieces of the Earth’s outermost layer, called tectonic plates, move.

Earth’s Structure and Pangaea. Review Inside the Earth The Earth has 4 main layers. 1.Crust (rock) 2.Mantle (rock) 3.Outer Core (metal) 4.Inner Core (

Sea Floor Spreading The Mid-ocean Ridge Vocabulary Sonar Sea-floor spreading Deep-ocean trench Subduction Mid-ocean ridge.

Seafloor Spreading What evidence do scientists have to support the fact that the Earth’s crust is continuously moving?

Seafloor Spreading. Seafloor Spreading Video Wegener could not explain how the continents moved but... Harry Hess explained HOW continents moved and.

Plate Tectonics.

Continental Drift Theory Proposed by Alfred Wegener in million years ago, all of the continents were combined into one super-continent called.

Main Features of Plate Tectonics The Earth's surface is covered by a series of crustal plates.

 “Weak sphere”  Layer that is involved in mantle convection.

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

Earth’s Structure and Pangaea. Review Inside the Earth The Earth has 4 main layers. 1.Crust (rock) 2.Mantle (rock) 3.Outer Core (liquid metal) 4.Inner.

A. The theory that pieces of the Earth’s lithosphere, called plates, move slowly on top of the asthenosphere B. Explains the formation and movement of.

Plate Tectonics Ocean Floor Earth Layers Potpourri

Plate Tectonics.

6.2 The Theory of Plate Tectonics

Sea Floor Spreading The Mid-ocean Ridge.

Theory of plate tectonics

Plate Tectonics.

The Ocean floor and Coast

Plate Tectonics.

Seafloor Spreading Chapter 7 Section 2 Pgs

Earth’s Structure and Pangaea

Plate tectonics.

Earth’s Structure and Pangaea

Plate Boundaries Plate boundaries are where plates interact with each other. 3 Type: Divergent Convergent Transform.

DRAIN THE OCEANS!.

Earth’s Structure and Pangaea

Earth’s Structure and Pangaea

Earth’s Structure and Pangaea

Divergent Plate Boundaries

Seafloor Spreading Chapter 7 Section 2 Pgs

Earth’s Structure and Pangaea

Sci. 4-3 The Theory of Plate Tectonics Pages

Earth’s Structure and Pangaea

Plate Tectonics.

Seafloor Spreading.

Presentation transcript:

Sonar and the beginning of seafloor spreading By: Vanessa and Micaela

Definition of Sonar A device used for finding things that are underwater by using sound waves A method or device for detecting and locating objects especially underwater by means of sound waves sent out to be reflected by the objects A device for detecting the presence of a vessel (as would a submarine by the sound it emits in water

How sonar works Sonar is something both animals like Whales or Dolphins and or special equipment like submarines can use, It sends out sound waves into the environment. These waves bounce of objects and reflect back to whatever made the noise. Sonars are simply just making echoes, that can sense their shape and movement.

Dolphins or Whales can actually tell how small an object is, Like as small as a BB pellet from 50 feet away, And they usually use sonar to find their food, families, and direction.

Theory of seafloor spreading Seafloor spreading and other tectonic activity processes are the result of mantle convection. Mantle convection is the slow, churning motion of Earths mantle. Convection currents carry heat from the lover mantle and core to the lithosphere. Convection currents also “recycle” lithospheric materials back to the mantle.

Seafloor spreading- is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. A long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading known as the mid ocean range. The mid ocean range is a range on mountains created be the hot magma that flows from within earths crust.

Sources: or-spreading or-spreading