Types of Volcanoes Worksheet

What is a key characteristic of cinder cone (scoria cone) volcanoes?

• They are the largest type of volcano.

• They erupt fluid lava frequently.

• They are the smallest type, with steep sides built from loose volcanic debris.

• They are always symmetrical in shape.

How do composite volcanoes (stratovolcanoes) typically form?

• By a single eruption vent expelling only lava

• By the accumulation of different types of volcanic materials

• By the slow cooling of magma underground

• By the erosion of old mountains

Why might Trident Volcano in Alaska be considered a complex volcano?

• It is the tallest volcano in Alaska.

• It erupts only once in its lifetime.

• It includes features of both stratovolcanoes and lava domes.

• It is made entirely of ash.

A scientist is studying a volcano that erupts rocks and gas, but not flowing lava, and is less than 400 meters tall. Based on this information, what type of volcano is being studied?

• Shield volcano

• Composite volcano

• Cinder cone

• Lava dome

Which of the following best describes the magma composition of shield volcanoes?

• Andesitic to rhyolitic

• Basaltic

• Rhyolitic or dacitic

• Granitic

What is a key characteristic of lava domes (volcanic domes)?

• Large, broad, gentle slopes

• Small, steep-sided mounds where viscous lava piles up near the vent

• Tall, narrow cones with explosive eruptions

• Flat, wide plateaus formed by lava flows

Which volcano is an example of a dormant volcano?

• Mount Fuji

• Yellowstone

• Shiprock

• Olympus Mons

Compare the eruption frequency and explosiveness of shield volcanoes and stratovolcanoes. Which statement is correct?

• Shield volcanoes erupt less frequently and are more explosive than stratovolcanoes.

• Stratovolcanoes erupt more frequently and are less explosive than shield volcanoes.

• Shield volcanoes erupt more frequently and are less explosive than stratovolcanoes.

• Both types erupt with the same frequency and explosiveness.

A volcano has no signs of recent activity and no longer has a magma supply. What category does it belong to?

• Active

• Dormant

• Extinct

• Erupting