PLATE TECTONICS NOTES

Many cultures used ______ and _________ to explain earthquakes, __________ and tidal waves. myths legends volcanoes

Scientists used the _____________________ and developed a _________ based on facts (evidence). Scientific Method theory

Plate Tectonics Theory = The Earth is _________ by a thin layer of large, moving ______. covered plates

There are 7 major Plates that are part of the crust and mantle that is like cookie dough called the Lithosphere.

Alfred Wegener first developed the _______ of Continental Drift (now called ___________________ ) using fossils, ______ formations and matching coast lines. theory Plate Tectonics rock

Plates can _________ apart, _________ head-on, _________ (one slides under the other), or _____________ each other in opposite directions. spread collide subduct slide past

Quick write 1 How do plates move?

As a result, a lot of _____ crust forms, old crust gets destroyed, ___________ rise, volcanoes _________ , and ___________ happen between plates. new mountains erupt earthquakes

Quick write #2 What is created by these plate movement?

Plates under the ocean were discovered using ________ . sonar

Ridges and ___________ were discovered on the __________. trenches sea floor

Quick write #3 What is created under the ocean discovered by sonar and undersea exploration?

= _______ core, ________ core, ________ , _____. inner outer mantle Earth’s layers = _______ core, ________ core, ________ , _____. inner outer mantle crust Outer Core Crust Inner Core Mantle

Quick write #4 What is in the Mantle? Explain the movement inside this layer of the Earth.

Fault = a ______ in the Earth’s _______ where there has been movement caused by _______. crack crust stress

Mid-Ocean Ridge = _____ on the sea floor where new crust is _______ & plates are spreading _______. area forming apart

= the ________ plate we live on. tectonic North American Plate = the ________ plate we live on. tectonic North American Plate

Pacific Plate = the tectonic plate _____ of the North American Plate. ____________ is located on it. west Los Angeles Pacific Plate

Pangaea = one _____________ mass before continents separated. large land

Sea-floor spreading = the outflow of ___________ material along ___________ ridges. new crust mid-ocean

Trench plate under plate = an area where one tectonic ______ is going down _____ a second ______ . plate under plate

The End . . . . .