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  • Lesson: Sea-floor spreading
  • so this is our topic for today. about the sea-floor spreading
  • After Class
  • Hey Ben , did you know that our ocean expands? but still it is not actually expands continously....
  • The Explanation
  • hmmmm.. tell me more about it
  • while the teacher is discussing about Seafloor Spreading. The students are listening.
  • Elaboration
  • Susie is telling Ben their topic about Sea-floor spreading.While Ben is listening , he become curious about it.
  • Presenting
  • Susie explains , "At the Mid-Atlantic Ridge (and other places), material from the upper mantle rises through the faults between oceanic plates. It forms new crust as the plates move away from each other. "
  • Understanding
  • Now I know more! Thanks Susie! The World of Science is so Amazing
  • "..The new crust then slowly moves away from the ridge.Seafloor spreading helps explain continental drift in plate tectonics"
  • "samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge" Susie answered.
  • What is the evidence of this? 
  • After all of the discussion, Ben and Susie went home bringing some amazing lesson in Science. The Sea-floor spreading.
  • You're welcome Ben. Go study more! and be amazed!
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