Do Now - Types of Volcanoes

What is the primary characteristic of the lava from shield volcanoes?

• High viscosity

• Low viscosity

• Sticky and does not flow far

• Forms cinders

Which of the following volcano types is known for being wide and flat?

• Composite Volcanoes

• Shield Volcanoes

• Cinder Cone Volcanoes

• Stratovolcanoes

Which type of volcano is typically formed from alternating eruptions of lava and ash?

• Shield Volcanoes

• Cinder Cone Volcanoes

• Composite Volcanoes

• Lava Domes

Identify a characteristic that is common to cinder cone volcanoes.

• Tall and pointed

• Wide and flat

• Smaller than other types

• Formed by alternating eruptions

Which of the following is an example of a shield volcano?

• Mt. St. Helens

• Mauna Loa

• Mt. Fuji

• Eldfell

Explain why composite volcanoes often have explosive eruptions.

• They have low viscosity lava that flows easily.

• They are formed by the accumulation of cinders.

• They have high viscosity lava that traps gases.

• They are the most common type of volcano.

What is a common feature of the slopes of shield volcanoes?

• Steep and narrow

• Flat toward the base and steep toward the summit

• Rarely steep and broadly sloping

• Circular or oval cone

Describe how cinder cone volcanoes are formed.

• By the accumulation of lava flows

• By alternating eruptions of lava and ash

• By the accumulation of cinders around a vent

• By the collision of tectonic plates

Which of the following is a characteristic of composite volcanoes?

• Quiet, oozing lava flows

• Formed by the accumulation of cinders

• Tall and pointed

• Wide and flat

Why are shield volcanoes usually not explosive?

• They have high viscosity lava that traps gases.

• They are formed by the accumulation of cinders.

• They have low viscosity lava that allows gases to escape.

• They are the most common type of volcano.