Hawaiian eruptions are extremely violent and produce large pyroclastic flows.

Molten rock that reaches Earth’s surface is known as _______.

Which of the following is the name for a fine-grained, felsic igneous rock?

The person in the figure below was encased by a pyroclastic flow.  

What is the difference between a sill and a dike?

The island depicted in the diagram acts as                     .                    

The composition of most magma is 40%-75% ________ by weight.

Igneous rocks high in feldspars and silicates are known as felsic rocks.

_______ igneous rocks are composed of dark-colored minerals rich in magnesium and iron.

Discuss how large eruptions like Mt. Pinatubo in 1991 and Tambora in 1815 affected Earth’s climate.