1 Big rocks break into smaller bits. Sand is tiny bits of rock. Wind blows sand. It carries it to new places. Wind blows soil away from fields. Water can carry away soil and rock. Glaciers are huge pieces of ice. They move across land. Ice can move rock and soil, too.
Erosion is the moving of rock, sand, or soil by nature. Nature can use wind, water, or ice to cause erosion. Erosion changes the land.
2 Sometimes the pieces are carried far away from where they started out. When the wind or water slows down, the pieces are put down. This is called
deposition.
3 Most of the time, erosion is slow. It may take millions of years. The Grand Canyon was formed by millions of years of erosion.
Paragraphs 4 to 5:
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