Volcano Vocabulary Quiz for Grade 6

What is the name for a volcano that has not erupted in a long time but may erupt again in the future?

• Active

• Dormant

• Extinct

• Erupting

Which type of volcano is known for its broad, gently sloping sides?

• Shield volcano

• Cinder cone volcano

• Composite volcano

• Lava dome

What is the main opening at the top of a volcano called?

• Crater

• Vent

• Magma chamber

• Caldera

Which part of a volcano is a large underground pool of molten rock?

• Lava flow

• Magma chamber

• Ash cloud

• Vent

What is the name for molten rock that is found beneath the Earth's surface?

• Lava

• Magma

• Ash

• Tuff

Which type of lava is thick, slow-moving, and forms rough, jagged surfaces?

• Pahoehoe

• Aa

• Pillow lava

• Basaltic lava

What is the term for the bowl-shaped depression at the summit of a volcano?

• Caldera

• Crater

• Vent

• Fissure

Which type of volcano is built up by many layers of hardened lava and ash?

• Shield volcano

• Cinder cone volcano

• Composite volcano

• Fissure volcano

What is the name for the hot, fast-moving cloud of gas and volcanic matter that flows down the sides of a volcano?

• Lava flow

• Pyroclastic flow

• Ash fall

• Lahar

Which type of lava is smooth, fast-flowing, and forms rope-like structures?

• Aa

• Pahoehoe

• Andesitic

• Rhyolitic