Chapter 13 Earth’s History   Precambrian Time: Vast and Puzzling
Precambrian History   <ul><li>The Precambrian encompasses all the geologic time from 4.5 billion years ago until the state...
Precambrian Rocks   <ul><li>Many Precambrian rocks are buried under layers of younger rocks. </li></ul><ul><li>Sometimes t...
<ul><li>Most Precambrian rocks are igneous or metamorphic in nature and tend to form the core of most continents called  _...
Earth’s Atmosphere Evolves <ul><li>Earth’s original atmosphere was composed of gases similar to those released by volcanic...
<ul><li>As Earth cooled, water vapor condensed to form clouds and great rains began.  </li></ul><ul><li>Most of the rain e...
<ul><li>The rain literally filled the ocean basins, which reduced the amount of water vapor in the air and reduced the amo...
The Process of Change <ul><li>All organisms change </li></ul><ul><li>The study of changes that occur in organisms is calle...
Evidence to support the theory of evolution <ul><li>1.  _________ </li></ul><ul><li>only ___% of all living things were ev...
 
3. Embryological Similarities
4. Vestigial Organs <ul><li>These are organs that you have that  _________  function </li></ul><ul><li>_________ </li></ul...
Life through geologic time <ul><li>For the sake of this class, we will start in the Precambrian time. </li></ul><ul><li>Wh...
What causes evolutionary changes to happen? _________
Specialization <ul><li>Some organisms tend to adapt toward  _________  needs…… </li></ul><ul><li>What special needs do Koa...
Stress is…….. <ul><li>necessary to put  _________  pressure on critters to make them change ( _________  ) </li></ul><ul><...
Examples how animals diversify <ul><li>1.   _________ </li></ul><ul><li>ex:  _________ </li></ul><ul><li>2.  _________ </l...
Examples how animals diversify <ul><li>3.What animals can and can not see color? </li></ul>Can not see color _________ ___...
Examples how animals diversify <ul><li>4. Temperature </li></ul><ul><li>ex:  _________ </li></ul><ul><li>_________ </li></...
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Chapter 13outlinept1

  1. 1. Chapter 13 Earth’s History Precambrian Time: Vast and Puzzling
  2. 2. Precambrian History <ul><li>The Precambrian encompasses all the geologic time from 4.5 billion years ago until the state of the Cambrian Period, 4 billion years later. </li></ul><ul><li>88% of the geologic time scale is encompassed here. </li></ul>
  3. 3. Precambrian Rocks <ul><li>Many Precambrian rocks are buried under layers of younger rocks. </li></ul><ul><li>Sometimes these rocks are exposed at the surface by the process of? </li></ul><ul><li>_________ </li></ul>
  4. 4. <ul><li>Most Precambrian rocks are igneous or metamorphic in nature and tend to form the core of most continents called _________ </li></ul><ul><li>The North American Continent was formed around the _________ </li></ul><ul><li>Shield areas are rich in _________ </li></ul><ul><li>such as nickel, iron, gold, silver, copper, aluminum, uranium, and diamonds. </li></ul>
  5. 5. Earth’s Atmosphere Evolves <ul><li>Earth’s original atmosphere was composed of gases similar to those released by volcanic eruptions including: </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>No oxygen </li></ul>
  6. 6. <ul><li>As Earth cooled, water vapor condensed to form clouds and great rains began. </li></ul><ul><li>Most of the rain evaporated before reaching the surface and when it did reach the surface it boiled or evaporated. </li></ul><ul><li>The evaporation process caused the Earth to cool faster. </li></ul>
  7. 7. <ul><li>The rain literally filled the ocean basins, which reduced the amount of water vapor in the air and reduced the amount of carbon dioxide, leaving a _________ </li></ul><ul><li>rich atmosphere. </li></ul>
  8. 8. The Process of Change <ul><li>All organisms change </li></ul><ul><li>The study of changes that occur in organisms is called the theory of ________. </li></ul><ul><li>Are there evidences that tend to suggest this process occurs? </li></ul>
  9. 9. Evidence to support the theory of evolution <ul><li>1. _________ </li></ul><ul><li>only ___% of all living things were ever fossilized </li></ul>
  10. 11. 3. Embryological Similarities
  11. 12. 4. Vestigial Organs <ul><li>These are organs that you have that _________ function </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul>
  12. 13. Life through geologic time <ul><li>For the sake of this class, we will start in the Precambrian time. </li></ul><ul><li>Why are fossils so rare to find from this time? </li></ul><ul><li>Most of the rocks are _________ </li></ul><ul><li>Most critters here were without _________ </li></ul>
  13. 14. What causes evolutionary changes to happen? _________
  14. 15. Specialization <ul><li>Some organisms tend to adapt toward _________ needs…… </li></ul><ul><li>What special needs do Koalas have ? </li></ul>_________
  15. 16. Stress is…….. <ul><li>necessary to put _________ pressure on critters to make them change ( _________ ) </li></ul><ul><li>_________ means: _________ </li></ul><ul><li>The more diversified the organism, the _________ its chances are to survive. </li></ul>
  16. 17. Examples how animals diversify <ul><li>1. _________ </li></ul><ul><li>ex: _________ </li></ul><ul><li>2. _________ </li></ul><ul><li>ex: _________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul>
  17. 18. Examples how animals diversify <ul><li>3.What animals can and can not see color? </li></ul>Can not see color _________ _________ _________ _________ _________ _________ _________ _________ Can see color _________ _________ _________ _________
  18. 19. Examples how animals diversify <ul><li>4. Temperature </li></ul><ul><li>ex: _________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>5. Ecotype adaptation </li></ul><ul><li>ex: _________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul><ul><li>_________ </li></ul>

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