Intro to Earth- Geosphere SJCHS. Geosphere Geosphere: Land on surface and interior of Earth.

Slides:



Advertisements
Similar presentations
Continental Drift and Plate Tectonics
Advertisements

Plate Tectonics Review
CONTINENTAL DRIFT, LAYERS OF THE EARTH, PLATE TECTONICS SI.
Movers and Shakers Vocabulary Review Created By Jacob Feinland.
PLATE TECTONICS Chapter 7 – Inside the Restless Earth
Plate Tectonics. Pangea 1912 – Alfred Wegener 1912 – Alfred Wegener Theory: All of the continents Theory: All of the continents were connected as one.
Seismic Waves Vibrations that travel through the Earth carrying the energy released during an earthquake Pressure The force exerted on a surface divided.
Chapter One Section 1 Plate Tectonics
Planet EarthSection 1 What is Earth’s Interior Like? 〉 How is Earth’s interior structured? 〉 Earth’s interior is made up of several distinct compositional.
Earth’s Interior Section1.
Review. a. They both decrease. b. They both stay the same. c. They both increase. d. Temperature increases and pressure decreases.
Earth Shaping Chapter 16. Earth Shaping Theory   It was a gradual change over time.   In early 1900’s Alfred Wegener proposed the theory of continental.
Plate Tectonics Mrs. Ramsey 6 th Science. Inside the Earth Composition of earth: Divided into three layers – Crust: km think. Thinnest layer – Mantle-
 Composition: Silicon, Oxygen, and Aluminum  Types: › Continental Crust: solid & rocky outer layer › Oceanic Crust: thin & dense material.
UNIT 3 EARTH SCIENCE RI_Z2Kgs&safety_mode=true&persist_s afety_mode=1&safe=active.
Our Amazing Planet. Planet Earth Earth’s Layers Crust Earth’s thin outermost layer. – Continental Crust (land) - thick low density rock (granite). –
Our Amazing Planet.
Internal Structure of the Earth
The Earth. Layers of the Earth CRUST MANTLE OUTER CORE INNER CORE.
Plate Tectonics. The Earth’s 4 Layers 1.Inner Core: Center, made of solid iron and nickel km 2.Outer Core: Made of liquid iron and nickel
Topic Xii “Earth Dynamic Crust” I. Evidence of Crustal Movement: A. Original Horizontality: assumes that sedimentary rock is deposited in flat layers.
Plate Tectonics 8 th Grade Science. Earth’s Composition.
Our Amazing Planet. Engage Assignment Make a 3 slide power point on each of the three types of plate boundaries – Convergent boundaries – Divergent boundaries.
Vocabulary.  3 Types: 1. Oceanic – Oceanic 2. Continental – Continental 3. Continental – Oceanic  Definition The boundary formed by the collision.
Geology of the Ocean. Origin of Earth 4.6 billion years ago began as giant disk of dust and gases orbiting the sun grains came together forming comets,
Layers of the Earth Types of boundariesVocabularyGrab.
The Earth’s Internal Properties. I. Seismic Waves A. = Earthquake-generated waves traveling through the Earth’s interior B. Give us clues to the composition.
Earth’s Interior Sea-floor spreading Plate Tectonics Continental Drift VocabPotpourri
12.2 Features of Plate Tectonics  Earth is over 1200 km thick and has four distinct layers.  These layers are the crust, mantle (upper and lower), outer.
INSIDE THE EARTH REVIEW COMPLIMENTS OF MS. SINGLETON.
Plate Tectonics The Earth’s Crust in Motion…. Earth’s Interior Scientists have not been able to directly study much of the earth’s interior due to high.
Plate Tectonics Test Review
Plate Tectonics, Earthquakes, and Volcanoes Study Guide
Plate Tectonics 8 th Grade Science. Earth’s Composition.
Layers of the EARTH CRUST 5 to 25 miles thick and up to 1,600 F MANTLE 1,800 miles thick and up to 8,000 F OUTER CORE 1,400 miles thick and up to 11,000.
Earth’s Structure.
Earth’s Structure.
LAYERS OF THE EARTH PLATE BOUNDARIES PLATE TECTONICS CONTINENTAL DRIFT
12.2 Features of Plate Tectonics
Vocabulary Earth’s Interior Theory of Tectonics
Plate Tectonics.
landforms mass movement crust weathering erosion mantle inner core
Jeopardy Rocks Minerals Plate Tectonics EQs & Volcanoes Q $100 Q $100
Plate Tectonics.
Chapter 4: Plate Tectonics
Earth’s Layers The three main layers of Earth are the crust, mantle, and the core. These layers vary greatly in size, composition (what they are made of),
PLATE TECTONICS.
Earth’s Layers Three main layers Crust, Mantle, and Core
12.2 Features of Plate Tectonics
Plate Tectonics 8th Grade Science.
Vocabulary Structure of Earth Continental Drift Theory Plate Tectonics Miscellaneous
Chapter 4: Plate Tectonics
Earth’s Changing Structures
Chapter 4: Plate Tectonics
Changing Earth Movement in Earth.
Vocabulary Inside the Earth Boundaries & Faults Continental Drift
Continental Drift 1912 – German Scientist Alfred Wegener
Plate Tectonics Test.
Features of Plate Tectonics
Jeopardy Layers of Earth That’s Stressful Q $100 Q $100 Q $100 Q $100
Chapter 7 Plate Tectonics
Earth Layers Physical Layers Continental Drift Seafloor Spreading Plate Boundaries
QUICK REVIEW… Layers of the Earth
Science 7-Chapter 14 Review for Retake!.
Welcome to (insert name) class.
CHAPTER 4 STUDY GUIDE QUESTIONS
Section 1 – Inside the Earth
PLATE TECTONICS.
Science Plate Tectonics
Presentation transcript:

Intro to Earth- Geosphere SJCHS

Geosphere Geosphere: Land on surface and interior of Earth

Geosphere Lithosphere: cool, rigid shell (made of rocks) Asthenosphere: part of mantle made of malleable rock Mesosphere: part of mantle made of solid rock

Geosphere Outer Core: Molten iron and nickel Causes Earth ’ s Magnetic field Inner Core: Solid iron and nickel

Plate Tectonics Theory of Plate Tectonics: Earth ’ s lithosphere is fragmented into a dozen plates that are moving

Plate Tectonics-History Early 1900s: Alfred Wegener proposes continental drift Continents were once one giant land mass (Pangaea) that had separated over time

Plate Tectonics-Evidence Continents look like a puzzle with pieces that fit together The same fossils were found on continents separated by oceans

Plate Tectonics-Evidence

Plate Boundaries Divergent Boundary: Plates are moving apart, forms new crust

Plate Boundaries Rifts: Surface cracking, can form oceans Mid ocean ridges: Newly formed (200 million years old) underwater mountain chains

Plate Boundaries

Convergent Boundaries: One plate sinks under another (subducts); forms trenches, mountains

Plate Boundaries

Transform-fault boundaries: 2 Plates sliding horizontally past each other

Plate Boundaries Active volcanoes and earthquakes tend to occur around most plate boundaries

Cause of Plate Tectonics Sea floor spreading or ridge pull: New lithosphere forms at mid ocean ridges (underwater mountains) causing plates to move

Cause of Plate Tectonics Convection in mantle causes motion of plates

Cause of Plate Tectonics Slab pull: As a plate subducts, it pulls the rest of the plate with it due to gravity

Volcano Volcano: A structure made of a combination of cooled molten rock and/or dust/rocks Fueled by magma that enters the crust from the mantle when a plate subducts

Volcano Lava: Molten rock Pyroclastic flow: A combination of hot ash, dust, and gases that travel at high speeds from eruption

Lava Basaltic: Thin lava, dark in color, high in temperature, flows quickly Rhyolitic: Thicker lava, light in color, lower temperature, flows slowly Andesitic: In-between other 2 types

Volcano Quiet eruptions: Lava only Explosive eruptions: Pyroclastic material and lava

Hot Spots feeling-hot-hot-hot/video-segments- violent-hawaii/1533/

Earthquake Earthquake: When a break between rocks (fault) moves causing ground vibrations (seismic waves)

Earthquake Body Waves: Travel through Earth P (primary) waves Fastest (6 km/s) Compressional waves: Cause change in volume and density of material

Earthquake S (secondary) waves Half speed of P waves Shear waves: Cause change in shape of material

Earthquake Surface waves: travel on surface of Earth half speed of S waves Can move ground vertically or horizontally

Earth Interior Can use seismic waves to determine composition of crust, mantle, core S waves only travel through solids P waves travel through solids and liquids P waves travel faster through solids, slower in liquids

Earthquake Earthquakes cause damage through shaking and liquefaction Liquefaction: Soil and sediment behaves like a liquid and cannot support structures

Earthquake Tsunami or Seismic Sea Wave A fault in the ocean slips or a large underwater land slide occurs Creates a fast moving wave ( km/hr) As waves reach shore, velocity decreases but height increases

_9l4I 4HXqCs PR3S6w

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com Inc. All rights reserved.