Volcanoes are the foundation for igneous rocks. When volcanoes erupt, magma and lava spews out. After cooling and solidifying, they become igneous rocks.
— Read on earthhow.com/igneous-rocks/
Ontario Association of Geographic and Environmental Educators
Teacher organization supporting Geographic Education, Ontario, Canada
Volcanoes are the foundation for igneous rocks. When volcanoes erupt, magma and lava spews out. After cooling and solidifying, they become igneous rocks.
— Read on earthhow.com/igneous-rocks/