There are approximately 600 active volcanoes on land.

Analyze this sentence:

approximatelyactive land

What is a volcano??

A weak spot in the crust where molten material- magma- comes to the surface.

MAGMA• Beneath ground

LAVA• Above ground

Ring of Firehttps://www.youtube.com/watch?v=uZp1dNybgfc

Soo.. Where do volcanoes form?

Volcanoes form along the boundaries of Earth’s plates.

• Diverge or Converge– Causes fractures in the crust– Magma rises

Hot Spot Volcanoes

A volcano forms above a hotspot when magma erupts through the crust and reaches the surface.

Diverging Boundaries

Magma released from the rift valley or center of the mid ocean ridge.

Converging Boundaries

Magma is released from the tops of mountains (land) and mid ocean trenches (subduction)