Weird and Wonderous Rocks HMH

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What are unique rocks?

Back

Rocks that have unusual shapes, colors, or features that make them stand out from regular rocks.

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What are the 'sailing' rocks in Death Valley known for?

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They are known for moving across the desert floor, leaving trails behind them.

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How do stalagmites grow?

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Stalagmites grow from the floor of a cave upwards.

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What is a cave?

Back

A cave is a natural underground space large enough for a human to enter.

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What is the difference between stalactites and stalagmites?

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Stalactites hang from the ceiling of a cave, while stalagmites grow from the floor.

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What causes rocks to change shape?

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Rocks can change shape due to weathering, erosion, and pressure over time.

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What is erosion?

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Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes.

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What is a mineral?

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A mineral is a naturally occurring substance that is solid and stable at room temperature.

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What is sedimentary rock?

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Sedimentary rock is formed from the accumulation of sediment, which can include minerals, organic matter, and other particles.

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What is metamorphic rock?

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Metamorphic rock is formed when existing rocks are changed by heat, pressure, or chemical processes.