sediment - small, solid pieces of material that come from rocks or living things, catastrophic - involving or causing sudden great damage or suffering, deposit - to put down; to drop, gravitational force - an attractive force that acts between any two objects, flooding - When an area or place is submerged in water, pollution - Release of harmful materials into the environment, earthquake - The shaking that results from the movement of rock beneath Earth's surface., landslide - a slide of a large mass of dirt and rock down a mountain or cliff, model - a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with, natural hazard - an event in nature (such as a landslide, earthquake, hurricane, or wildfire) that can be dangerous to living things, weathering - breaking of rock into smaller pieces (sediment), erosion - moving of sediment from one place to another, deposition - dropping of sediment in a new place , canyon - forms when a river digs deep into the ground, example of erosion, delta - forms when a river slows down at an ocean or lake and drops sediment, example of erosion and deposition, sand dune - forms when sand is blown into a new pile, example of erosion and deposition, glacier - slow moving ice and snow on land, example of WED, beach - forms when sand, rocks, or shells land on the edge of a lake or ocean, example of erosion and deposition, cave - an example of weathering and forms when groundwater dissolves limestone, example of WED, WED - Acronym for weathering, erosion, and deposition, rock cycle - The way rocks can move from one type of rock to another type of rock., volcano - a mountain or hill, typically conical, having a crater or vent through which lava, rock, or gas erupt, wild fire - A wildfire is an uncontrolled, unwanted fire that burns in a natural area such as a forest, grassland, or prairie, hurricane - a storm with a violent wind in the ocean, tornado - a storm with violent wind on land, dissolve - when one substance mixes with another and it looks like it disappears, such as when sugar mixes into tea,

Changes to Earth's Surface Leirer 4th Grade

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