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Geo: Unit 1, Chapter 2 Powerpoint
Geo: Unit 1, Chapter 2 Powerpoint
Geo: Unit 1, Chapter 2 Powerpoint
Geo: Unit 1, Chapter 2 Powerpoint
Geo: Unit 1, Chapter 2 Powerpoint
Geo: Unit 1, Chapter 2 Powerpoint
Geo: Unit 1, Chapter 2 Powerpoint
Geo: Unit 1, Chapter 2 Powerpoint
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Geo: Unit 1, Chapter 2 Powerpoint

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notes on chapter 2

notes on chapter 2

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  • 1. Mr. Philen’s notes on Chapter 2, section 1
  • 2. Chapter 1, section 1: the Earth <ul><li>Englishman Francis Bacon “first” suggested Earth fit together like a jigsaw puzzle in 1620. </li></ul>
  • 3. The Earth <ul><li>3 rd planet in Milky Way Galaxy </li></ul><ul><li>93 million miles from sun </li></ul><ul><li>Earth’s solar system consists of sun, planets, celestial bodies </li></ul><ul><li>You should know the order of the planets </li></ul><ul><li>Comets: spheres covered with ice and dust, leave trails of vapor </li></ul><ul><li>Asteroids: large chunks of rocky material </li></ul>
  • 4. The Earth – inside <ul><li>24,900 miles in circumference/7,900 miles in diameter </li></ul><ul><li>Core of earth made of iron and nickel </li></ul><ul><li>Outer core is liquid </li></ul><ul><li>Mantle has several layers (most of earth’s mass) </li></ul><ul><li>Magma (molten rock) forms in mantle and rises through crust </li></ul><ul><li>Crust – thin layer of rock at earth’s surface </li></ul><ul><ul><li>Continent/ocean </li></ul></ul><ul><ul><li>Continental and oceanic crust </li></ul></ul>
  • 5. Earth’s insides…refer to page 28 <ul><li>http://martianchronicles.files.wordpress.com/2008/08/103949main_earth10.jpg </li></ul>
  • 6. The Earth - outside <ul><li>Atmosphere – surrounds earth; layer of gases – Oxygen, Nitrogen, etc…protects earth from radiation and space debris; provides medium for weather and climate </li></ul><ul><li>Lithosphere – crust and upper mantle – 7 continents: North America, South America, Europe, Asia, Africa, Australia, Antarctica </li></ul><ul><li>Hydrosphere – water elements of earth (oceans, seas, rivers, lakes, water in atmosphere) </li></ul><ul><li>Atmosphere + Lithosphere + Hydrosphere = Biosphere ( where plants and animals live) </li></ul>
  • 7. Continental Theory <ul><li>In 1912 German Alfred Wegener suggested Continental drift theory </li></ul><ul><li>“ earth was once supercontinent that slowly drifted apart) </li></ul><ul><li>Pangea (“all earth”) </li></ul><ul><li>Panthalassa (ocean surrounding Pangea) </li></ul><ul><li>Split/separation took millions of years </li></ul><ul><li>Earth is still splitting – proof – in middle of ocean rocks are youngest in world… </li></ul>
  • 8. End Section 1 <ul><li>Questions for thought: </li></ul><ul><li>What are the elements of the biosphere? </li></ul><ul><li>How might the Earth’s inner core affect the biosphere? And vice versa </li></ul><ul><li>Discuss the continental theory. How do you think this theory affected people? (think about this in social and scientific terms) </li></ul><ul><li>PLEASE, review your notes, complete your reading… </li></ul>

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