1.02 Discuss cultures and human patterns of places and regions of the world.1.01 Understand the diversity of human cultures.
Students will explore these elements of society to develop an appreciation and respect for the variety of human cultures.
Glaciers in area 4 times in past 2-3 million years: Cause climate change Carve grooves into the mountains Deposit sedimentĮrosion of the peaks continues Eroded material moves down the mountains into the Piedmont region but then stops at fall line Fall line separates Piedmont & Coastal PlainsĮarthquakes Very few occur Less than 4.Appalachian History Terry Sams 4th Grade Teacher Piedmont Elementary Dandridge, Tennessee 2003-2004
How did the Appalachian’s form?: Step 5: Continental Collision (cont’d) 270 mya: Some rocks trapped below ground become granite, quartz, emeralds, slate, & shale Earthquakes are commonĨ How did the Appalachian’s form?: Step 6 : After the CollisionĢ40 mya: North American & African plates begin to separate again via seafloor spreading Crust piled up on North America from the collision remains there = Appalachian Mts! Atlantic Ocean starts to formĩ Changing the Appalachian Mountains: ErosionĮrosion via wind, water, & ice affects the shape of the peaks Originally high, steep, sharp Now lower, gently sloped, roundedġ0 Changing the Appalachian Mountains: Glaciers Presentation on theme: "Building the Appalachian Mountains"- Presentation transcript:Ģ How did the Appalachian’s form?: Step 1: The Crustal Rocks Formġ billion years ago Appalachian Mountain crust & rocks form Crust is part of a single continent surrounded by oceanģ How did the Appalachian’s form?: Step 2: Supercontinent Breaks Upħ50 mya (million years ago): Supercontinent begins to thin in places Thinner crust breaks apart into pieces The pieces of the original supercontinent all become new continentsĤ How did the Appalachian’s form?: Step 3: Divergent Continental Driftĥ40 mya: New continents move away from one another Ocean forms between new continents Copper, zinc, iron & sulfur deposit on sea floorĥ How did the Appalachian’s form?: Step 4: Convergent Continental DriftĤ70 mya: Continents reverse direction = North America & Africa move toward each other Continents push ocean floor together Frequent volcanoesĦ How did the Appalachian’s form?: Step 5: Continental CollisionĢ70 mya: North American & African continents collide Convergent continental-continental boundary Plates of same density = most crust pushes up
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