Pahoehoe lava flow is characterized by a ropy or billowy surface.
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Q2: Tuff is a rock composed of fine-grained
Q3: Silicic lavas, which are relatively high in
Q4: Basalt is the most common mafic rock.
Q5: Volcanic eruptions have no effect on climate.
Q6: The original volcano Mount Mazama erupted to
Q8: Earth is the only major body in
Q9: Pillow structures, pillow-shaped rounded masses, form where
Q10: Rhyolite is a fine-grained extrusive rock composed
Q11: Basalt is a variety of gabbro.
Q12: Composite volcanoes are also called cinder cone
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