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Why do volcanoes contain lava, or do they make it by melting rock or something else? Maybe better asked as, where does lava come from?

Dr. Aris Thorne
Dr. Aris Thorne
Senior Science Editor · Feb 17, 2026 · Updated Apr 13, 2026

Molten rock is what is in the centre of our earth where it's very, very, hot. Pressure within the volcano builds and eventually erupts. No one "makes" lava, it's a natural product

32
Words

1 min
Read Time

#412
of 500 in Nature

-55%
vs Category Avg

The Short Answer

Molten rock is what is in the centre of our earth where it's very, very, hot. Pressure within the volcano builds and eventually erupts. No one "makes" lava, it's a natural product

Analysis

Key Concepts: It's, molten, rock

This explanation focuses on it's, molten, rock and spans 32 words across 3 sentences. At 55% below the average Nature explanation (71 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.

What This Answer Covers

The explanation opens with: “Molten rock is what is in the centre of our earth where it's very, very, hot.” It then elaboratesultimately building toward a complete picture across 3 connected points.

How This Compares in Nature

Ranked #412 of 500 Nature questions by answer depth (top 83%). This is a brief primer — the answer is intentionally short. For questions with a single core mechanism, brevity can actually be a strength.

Frequently Asked Questions

Is there a simple explanation for why volcanoes contain lava, or do they make it by melting rock or something else? maybe better asked as, where does lava come from?

Molten rock is what is in the centre of our earth where it's very, very, hot. Pressure within the volcano builds and eventually erupts. No one "makes" lava, it's a natural product

How detailed is this explanation compared to similar Nature questions?

This is a brief answer at 32 words, ranked #412 of 500 Nature questions by depth. The key concepts covered are it's, molten, rock.

What approach does this answer take to explain volcanoes contain lava, or do they make it by melting rock o?

The explanation uses direct explanation across 32 words. It is categorized under Nature and addresses the question through 1 analytical lens.