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Volcanoes

Science, Grade 4

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© Copyright NewPath Learning. All Rights Reserved. 94-4351 Visit www.newpathlearning.com for Online Learning Resources. Volcanoes Photos courtesy of NASA and USFWS. What is a Volcano? Magma is hot, melted rock found beneath the Earth’s surface. When pressure builds up, magma erupts through the Earth’s crust. Volcanoes are openings in the Earth’s crust where the magma comes out. Volcanoes can change Earth’s Surface Volcanoes can form on continents or they can build from the ocean floor forming volcanic islands. The Hawaiian Islands were formed this way. Melted rock that comes above the Earth’s surface is called lava. Layers of cooled lava harden into rock and build up on the Earth’s surface around a volcano. magma magma erupting volcano continental mountain range volcanic island volcanic rock lava

© Copyright NewPath Learning. All Rights Reserved. 94-4351 Visit www.newpathlearning.com for Online Learning Resources. Volcanoes Pause & Review Label the images. Describe how a volcano forms. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________

Volcanoes

Science, Grade 4

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