Volcano

A weak spot in the Earth’s crust where molten material (magma) comes to the surface.

• volcano

• mountain

• hill

• valley

A molten mixture of rock forming substances, gases and water from the earth’s mantle.

• magma

• lava

• crater

• vent

When magma reaches the Earth’s surface

• magma

• lava

• crater

• vent

Forms when underground water is heated by magma or hot rock. The heated water rises and collects in pools. Examples are found in Laguna

• Hot Springs

• Geysers

• Geothermal Energy

• Volcanic Eruption

It is the heat coming from the depths of the Earth. It is believed that the heat is due to radioactive elements from the core.

• Heat Energy

• Kinetic Energy

• Potential Energy

• Geothermal Energy

Major volcanic belt formed by the many volcanoes that rim the Pacific Ocean.

• Bermuda Triangle

• Dragon's Triangle

• Pacific Ring of Fire

• West Philippine Sea

Gently sloping mountains. Thin layers of low viscosity lava build up over time. Ex) the Hawaiian Islands

• Shield volcanoes

• Cinder cone volcanoes

• Composite volcanoes

• Lava plateaus

High viscosity lava produces ash, cinders and bombs. Those materials build up around the vent in a steep cone shaped hill/mountain. Ex) Sunset Crater in Arizona

• Shield volcanoes

• Cinder cone volcanoes

• Composite volcanoes

• Lava plateaus

Form when volcanoes alternate between quiet lava flows and explosive eruptions of ash, cinders and bombs. Tall, cone shaped mountain with alternating layers of ash and lava. Ex) Mt St. Helens, Washington and Mt. Fuji, Japan

• Shield volcanoes

• Cinder cone volcanoes

• Composite volcanoes

• Lava plateaus

Huge hole left by the collapse of composite volcanic mountains. Filled with fallen pieces of the volcano, ash and lava. Enormous eruptions may empty the pipe and the magma chamber. Ex. is our Taal Volcano

• Calderas

• Cinder cone volcanoes

• Composite volcanoes

• Shield volcanoes