Why Hawaii's Kilauea eruption is nonexplosive

The video explains the differences between low and high silica magma. Low silica magma, found in the Pacific Plate, is less viscous, allowing volcanic gases to escape easily, leading to effusive eruptions. In contrast, high silica magma, common in the Pacific Ring of Fire, is highly viscous, trapping gas bubbles and causing pressure buildup, resulting in explosive eruptions.

What is a characteristic of magma found in the Pacific Plate?

• Low in silica and very viscous

• High in silica and less viscous

• Low in silica and less viscous

• High in silica and very viscous

Why do volcanic gases escape easily in low silica magma?

• Because the magma is very hot

• Because the magma is very dense

• Because the magma is less viscous

• Because the magma is under high pressure

Where do volcanoes on the Pacific Ring of Fire typically occur?

• Where oceanic plates meet silica-rich continental plates

• Where oceanic plates meet low silica continental plates

• Where continental plates meet continental plates

• Where oceanic plates meet oceanic plates

What causes the buildup of pressure in silica-rich magma?

• The magma is too hot

• The magma is too cold

• Gas bubbles are trapped due to high viscosity

• The magma is too dense

What type of eruption results from high pressure in silica-rich magma?

• Effusive eruption

• Explosive eruption

• Silent eruption

• Continuous eruption