'Glowing cloud' diaporamas de présentation

THE ROCK CYCLE

THE ROCK CYCLE. VOLCANISM. I. Introduction. From: Roman god of fire, Vulcan. I. Introduction. From: Roman god of fire, Vulcan What is a volcano? A conical mountain formed around a vent where lava, pyroclastic materials, and gases are erupted. I. Introduction. B. Volcanic activity:

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The Birth and Death of Stars

The Birth and Death of Stars. On-line Lesson. On-line Lessons: The Birth and Death of Stars. What are Stars? Stars are large balls of hot gas. They look small because they are a long way away, but in fact many are bigger and brighter than the Sun.

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Miracles

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