• Most geological activity takes place at plate boundaries.
  • But some activity does not.
  • Much of this intraplate activity is found at hot spots.
  • Hotspots are plumes of hot material that rise through the mantle.
  • Hotspot volcanoes erupt when the hot material melts to create magma.
  • Plates move above the hotspots, but hotspots stay in the same spot.
  • This feature is a very useful tool for scientists.
  • Scientists use hotspot volcanism to tell the direction and speed of a plate.
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