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Science Unit 2 About 9 minutes

Volcanoes

    What a volcano is

    A volcano is an opening in Earth's crust where magma comes out onto the surface.

    Magma chamber Ash and gas Vent Lava Magma
    Magma: melted rock under the surface. Lava: magma that reaches the surface.

    Watch magma rise and erupt

    Magma chamber Magma rises Vent Lava Ash and gas Hot spot Plate The plate moves. Chain of volcanic islands
    Vent: the opening where magma comes out. Hot spot: a very hot area in the mantle under a plate.

    Try it

    Build a volcano

    1. Pick a type of magma.
    2. Move the slider to add eruptions.
    3. Look at the shape of the volcano.
    Volcano type
    Shape
    Eruption
    Example

    Quick check

    Answer 5 questions. You see your score at the end.