Videos A to Z

• Visualizing Cell Processes

  
  • 6-8
  • 9-12

  Structure and behavior of the plasma membrane, osmosis, transport proteins, phagocytosis, pinocytosis, receptor mediated endocytosis, Golgi function, lysosomes and hydrolytic digestion, microtubules,…  » more info

  • Episodes/length: 10 program(s) / 7 minutes
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• Volcanoes and Earthquakes: Composite volcano

  
  • 3-5
  • 6-8
  • 9-12

  Composite volcanoes tend to have a pattern of violent eruptions that produce cinders and ash followed by lava, which spreads over previous layers of debris.  » more info

  • Episodes/length: 1 program(s) / 0 minutes
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• Volcanoes and Earthquakes: Epicenter and focus

  
  • 3-5
  • 6-8
  • 9-12

  The epicenter is the point on Earth's surface located directly above the focus. The focus is the point beneath Earth's surface where the earthquake originates.  » more info

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• Volcanoes and Earthquakes: Hot spots

  
  • 3-5
  • 6-8
  • 9-12

  Volcanoes that do not occur at plate boundaries are usually caused by hot spots, which are especially hot areas in the upper mantle of the earth. Volcanoes occur when magma from these hot spots makes…  » more info

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• Volcanoes and Earthquakes: Movement along fault

  
  • 3-5
  • 6-8
  • 9-12

  When sudden movement occurs along a fault, rocks break or slide past each other and energy is released, causing an earthquake.  » more info

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• Volcanoes and Earthquakes: Movement in crust

  
  • 3-5
  • 6-8
  • 9-12

  Sudden movement in Earth's crust generates waves of energy, which travel outward through the ground.  » more info

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• Volcanoes and Earthquakes: Primary wave

  
  • 3-5
  • 6-8
  • 9-12

  Primary waves are the fastest moving type of seismic wave. They are compression waves, which means that rock particles are pushed or compressed in the direction of the wave and then bounce back.  » more info

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• Volcanoes and Earthquakes: Ring of Fire

  
  • 3-5
  • 6-8
  • 9-12

  This area around the Pacific Plate is often referred to as the Ring of Fire because it is surrounded by converging plates, which produce many volcanoes.  » more info

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• Volcanoes and Earthquakes: San Andreas fault

  
  • 3-5
  • 6-8
  • 9-12

  Many earthquakes occur along the San Andreas fault, which is a transform or strike-slip fault.  » more info

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• Volcanoes and Earthquakes: Secondary wave

  
  • 3-5
  • 6-8
  • 9-12

  Secondary waves are slower seismic waves that arrive after primary waves. In secondary waves, rock particles move at right angles to the direction of the wave.  » more info

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