The Science of Beach Fun

The Science of Beach Fun — page 3
Tia and Marcus set up their buckets and shovels near the water The sand here is wet but not too wet They pack sand into buckets and carefully flip them over Marcus starts with a big base Each level gets smaller as he builds higher Then he digs a narrow moat He connects it to the lake The water flows around his sandcastle Tia carefully draws lines into her castle’s walls She doesn’t want the sand to crumble She drips watery sand down the other side for decoration She builds small towers They’re perfect for her flags When she finishes her castle she looks at Marcus It will be tough to decide what to do next BEACH BASICS Beaches are strips of land along bodies of water such as lakes or oceans The materials covering beaches such as sand or rocks are usually shaped by erosion Erosion is the process in which water and wind wear down rocks Erosion from the ocean can create steep cliff faces 6