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Rocks

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ROCKS Rocks * What is a Rock? Any solid mass of mineral or mineral-like matter that occurs naturally as part of our planet 3 types Igneous Sedimentary Metamorphic The ... – PowerPoint PPT presentation

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Title: Rocks


1
Rocks
ROCKS
2
What is a Rock?
  • Any solid mass of mineral or mineral-like matter
    that occurs naturally as part of our planet
  • 3 types
  • Igneous
  • Sedimentary
  • Metamorphic

3
The Grand Canyon
4
The Rock Cycle
  • Interactions among Earths water, air, land, and
    living things can cause rocks to change from one
    type to another
  • A continuous process

ROCK CYCLE VIDEO
5
Plate Tectonics
6
What is Continental Drift
  • Proposed by Alfred Wegener
  • Stated that the continents had once been joined
    to form a single supercontinent
  • Wegeners Theory
  • Pangaea broke apart 200 MY
  • Continents drifted
  • Continents broke through the oceans

7
Evidence of Continental Drift
  • Shorelines look like they fit together
  • Fossil organisms found on different landmasses
  • Several mountain belts end at one coastline, only
    to reappear on a landmass across the ocean
  • Ancient Climates

8
Matching Mountain Ranges
9
Glacier Evidence
10
The Theory of Plate Tectonics
  • Proposes that Earths outer shell consist of
    individual plates that interact in various ways
    and thereby produce earthquakes, volcanoes,
    mountains, and the crust itself

11
Pangaea
  • Occurred 500 MY
  • Continents breakup begins 200 MY
  • North America and Africa split 135 MY

12
Earths Major Plates
  • The lithosphere floats and moves along the mantle
  • Top 7 Plates Remaining Plates
  • African Arabian
  • Antarctic Caribbean
  • Eurasian Cocos
  • Australian-Indian Nazca
  • North American Philippine
  • Pacific Scotia
  • South American

13
Exit Ticket
  • In your own words, explain plate tectonics.
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