What Happens When A Volcano Meets a Glacier?

What is the primary reason the Earth's mantle is usually solid?

• High temperatures

• Low temperatures

• Pressure from tectonic plates

• Lack of water

How do glaciers prevent volcanic eruptions at seams where tectonic plates are pulling apart?

• They increase the temperature of the mantle.

• They add water to the mantle, increasing its melting point.

• They keep the mantle under pressure, preventing it from melting.

• They absorb the magma before it can erupt.

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What happens to the mantle's melting point when water is squeezed out of a sinking tectonic plate during a collision?

• It increases.

• It decreases.

• It remains unchanged.

• It becomes irrelevant.

What was the effect of glaciers melting after the last Ice Age on global volcanic eruption rates?

• Eruption rates decreased significantly.

• Eruption rates remained constant.

• Eruption rates spiked to six times above average.

• Eruption rates only increased in specific regions like Iceland.

In Iceland, how many more volcanic eruptions occurred in the immediate aftermath of the most recent Ice Age compared to the 100,000 years before it?

• Twice as many

• Ten times as many

• Thirty times as many

• One hundred times as many