Earthquake + volcanos

• What is the term for when two land masses move away from each other and magma forms new land in the middle?

  Constructive
• What happens when one side of the land goes under another?

  Destructive
• What is the term for when two tectonic plates slide past each other?

  Conservative
• What occurs when two plates with similar density move together?

  Collision
• What is a zone where one tectonic plate is under another called?

  Subduction Zone
• What is the outer part of the Earth that includes the crust and part of the mantle?

  Lithosphere
• What is the outer layer of the Earth called?


  Crust
• What is the term for magma that is located under the crust?


  Mantle
• What is located at the center of the Earth?


  Inner Core
• What is the third layer of the Earth?


  Outer Core
• What is the term for the middle point of an earthquake?


  Epicentre
• Where does an earthquake originate inside the crust?

  Focus
• What are the shockwaves produced by earthquakes called?

  Seismic Waves
• What instrument is used to record the waves of an earthquake?

  Seismograph
• What does the Mercalli Scale measure?


  Scale of earthquake damage
• What does the Richter Scale measure?


  Scale of earthquake magnitude
• What is slab pull in the context of tectonic plates?


  An old tectonic plate that sinks into the mantle in subduction zones
• What causes convection currents in the Earth's mantle?


  High temperatures at the Earth's core reaching around 6,000 °C
• What is the area beneath a volcano where magma collects before an eruption called?

  Magma Chamber
• What defines a dormant volcano?


  A volcano that has not erupted for a very long time but may erupt in the future
• What is a large plume of hot mantle material rising from deep within the Earth called?

  Hotspot
• What is a pyroclastic flow?


  A fast-moving, high-density current of hot gas, volcanic ash, pumice, and rock fragments that flows away from a volcano
• What is an extinct volcano?


  A volcano that scientists believe is unlikely to erupt again because it no longer has a magma supply
• What is a small volcano that forms on the side of a larger volcano called?

  Secondary Cone