Eartquake - When the land shakes or vibrates, because the technolic plates moved. , Volcano - A mountain with a hole where magma comes up. The lava turns in the rocks., Flood - Lots of rain and melted ice flows and fills a river., Weathering - When rocks break down into smaller pieces., Mechanical weatheing - Caused by sand, wind, rain, plant roots, ice, heat, Chemical weathering - Caused by salty water, minerals inside the rocks, acids and carbon dioxide, Minerals - A mineral is something that comes from the Earth and is non living thing, not organic.,

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