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volcanic ash
volcanic ash Encyclopedic Entry

Best For
5-12+

Subjects
Geography, Science

Appropriate For

  • Educators
  • Students

Volcanic ash is made of tiny fragments of jagged rock, minerals, and volcanic glass. Ash is a product of explosive volcanic eruptions.

volcano
volcano Encyclopedic Entry

Best For
5-12

Subjects
Geography, Science

Appropriate For

  • Educators
  • Students

A volcano is a feature in Earth's crust where molten rock is squeezed out onto the Earth's surface. Along with molten rock, volcanoes also release gases, ash, and solid rock.

wind
wind Encyclopedic Entry

Best For
6-12+

Subjects
Geography, Science

Appropriate For

  • Educators
  • Families
  • Students

Wind is the movement of air caused by the uneven heating of the Earth by the sun.