Volcanoes erupt with lava, but sometimes it can release a pryoclastic flow. Explain how a pryoclastic flow can happen.

Pryoclastic flows happen if a lava dome collapses, the lava shoots outwards, but collapses and if a volcano is damaged.

Explanation: If a lava dome collapses, it can cause a pryoclastic flow. During a eruption, it may snap off if it explodes. Like the eruption of Mount st. Helens. It swelled up then later the peak snapped off, creating a landslice and pryoclastic flow.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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