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They differ in size and origin. Volcanic ash consists of fine material ejected by a volcano up to 2 mm (0.08 in) in diameter. Lapilli consists of larger material, ranging from 2mm to 64 mm (2.52 in) in diameter. Blocks and bombs are larger than 64 mm. Volcanic bombs form when molten lava is ejected during an eruption and solidifies in the air. A volcanic block is from material that is already solid when it is ejected, coming either from country rock or rock formed by previous eruptions.

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9y ago
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1mo ago

Volcanic ash is fine particles of fragmented volcanic rock that are ejected into the air during an eruption, while volcanic bombs are larger, often rounded pieces of molten rock that solidify before landing. Ash is carried by winds and can travel long distances, whereas volcanic bombs usually fall near the eruption site due to their larger size and weight.

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14y ago

volcanic ash is made up of rock fragments less than 2 millimeters in diameter, volcanic bombs are large fragments.

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9y ago

Bombs are molten rock, blocks are solid rocks. Both must measure over 64 mm (2.5in).

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13y ago

Bombs are a type of pyroclastic debris

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12y ago

yes

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Q: What is the difference between volcanic ash and volcanic bombs?
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What is made of volcanic ash cinders and bombs?

Tephra consists of volcanic ash, cinders, and volcanic bombs. Tephra is ejected during explosive volcanic eruptions and can vary in size from tiny ash particles to large volcanic bombs.


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Vocanic dust is Fine vocanic ash that is under .063 millimeters. Vocanic ash is tiny parts of rock or glass, its size is under 2 millimeters. Volcanic bombs are magma that bursts out of the volcano and harden in the air. There size is over 64 millimeters. Vocanic cinders are dark glassy fragments that are produced by gas in the vocano.


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What is a name volcanic bombs ash and cinders combined?

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