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  1. 1. Name _____________________________ Class _______PLATE TECTONICSReviewInside the Earth The Earth is divided into four main layers: 1. __________________ 2. __________________ 3. __________________ 4. __________________The Crust The crust makes up _____ of the Earth. The crust of the Earth is broken into many pieces called ________________. Two types of crust: 1. _________________ (made of basalt) 2. _________________(made of granite)The Mantle The upper part of the mantle and the crust make up the ___________________. The mantle is the ______________ layer of the Earth. The mantle can be divided into two regions: the _____________ and ____________ mantle.Lithosphere The ______________________ ridge of the Earth.Asthenosphere Soft layer of the mantle _____________________________________ ________________________________________________________.
  2. 2. Mesosphere Beneath the Asthenosphere is the strongest part of the mantle—_____________.The Core The core extends from the bottom of the mantle to the ___________________. The outer core is _____________. The inner core is the ____________________________ of our planet.Tectonic Plates ___________________________________________________________ ___________________________________________________________Restless Continents Drifting continents: Theory of Continental DriftContinental Drift *_______________ can drift apart from one another and have done so in the past. *The continents are still slowly moving, at ______________________________.
  3. 3. _________________________ suggested that all continents were joined together at some time in the past. This is called the hypothesis of “________________________”. According to ______________________, continents have moved slowly to their current locations. He called this large landmass as _______________________ (“all land”).The “Breakup” of PangaeaEvidence 1. _________________________ 2. _________________________ 3. _________________________Landforms Mountains in ________________ line up with mountains in _________________ Coal mines line up on different continents
  4. 4. Mountains Similar rock structures are found on different continents. For example, parts of Appalachian mountains are similar to those found in _______________________________________________________. ____________________________strike through the eastern United States and Canada then end at the sea off of Newfoundland. The Caledonides Mountains are found in eastern _______________________ ___________________________________________________________ These two mountain ranges are the same age with the _________________ _________________________________________________________.Fossils Besides the puzzlelike fit of continents, __________________provided support for continental drift. For example: fossils of the reptile Mesosaurus have been found in ___________ ____________________________________ Another fossil that supports the continental drift is Glossopteris which has been found in ______________________________________________________.Climate Clues __________________________________ were found in Spitsbergen, an ice covered island in the Arctic Ocean (north of Norway). ___________________________and rock surfaces scoured and polished by ___________________ are found in South America, Africa, India and Australia.Why was it not accepted?____________________________________________________________________________________________________________________________________