volcanoes and earthquakes

    Cards (33)

    • Hazards from ash mixing with melted snow or rain
      • Fast moving mud flows
    • Lava
      Magma when it is erupted from a volcano
    • Volcanoes are the openings in the ground where molten rock from beneath the Earth's crust forces itself to the surface
    • Extinct volcano
      A volcano that never erupts again
    • Magma
      Molten rock from beneath the Earth's crust
    • Main vent
      Allows magma to escape
    • Volcanoes occur
      • Destructive + Constructive boundary
    • Magma chamber

      Collection of magma beneath the volcano
    • Volcanoes are essential for life on Earth
    • Volcanic bombs
      • Sharp edges
    • Crater

      • Main vent
      • Layers of ash and lava from previous eruptions
    • Secondary cone
      Volcano that forms when the main vent is blocked
    • Magma chamber
      Store of molten rock beneath the earth's surface
    • Lava flow

      • Volcanic bombs
    • Lava flow
      Molten rock that flows from a volcano
    • Crater

      A funnel-shaped opening
    • Volcanic bombs
      Lumps of molten rock
    • Volcanic bombs
      • Lumps of molten rock
    • shield volcano has runny lava, a gentle slope, low level of danger
    • Volcano blows up part of itself
    • Volcanic Hazards
      • Steady low level of danger
      • Composite Thick + Sticky steep slope Violant
      • Volcano lava
      • Volcanic Hazards
      • REDMI NOTE 13 PRO+
    • Speed of lava flow: 4200m/h
    • composite volcano has thicker lava, steep slopes, high levels of danger
    • hotspot is when magma rises from deep within the Earth to form a volcano on land or underwater
    • plate tectonics is where plates move over hotspots causing eruptions
    • Shield Volcano - Lava flows slowly down the sides of the mountain.
    • Composite Volcano - The eruption is explosive with ash and rocks being thrown into the air.
    • Cinder Cone - A small cone-shaped hill made from cinders (small pieces of rock).
    • a fault is a line of weakness in rock
    • the Focus is the poi
      nt beneath the earth where the energyof the earthquake is released
    • a seismic wave are shockwaves/ vibrations caused by an earthquake
    • a foreshock is a small quake before the main one. it can be a warning of a larger quake.
    • a seismometer is the instrumebt used to measureearthquakes
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