Ships Ahoy
"Captain" Rob McDonald loves to study Viking ships so much that he decided to build one of his own-using 15 million ice cream sticks! McDonald spent two years gluing the sticks together until he finally had a boat he could sail.
Like Viking ships from the past, McDonald's boat has a flat keel, or bottom, that barely dips below the water's surface. That means less water pushes against the keel. And because less water is pushing against the boat, it experiences little drag (a stowing force) as it sails.
So did McDonald really eat 15 million ice cream treats to get the sticks? No! Most were donated by an ice cream company, while others were sent to him by children from around the world.
Source: Scholastic SuperScience
Like Viking ships from the past, McDonald's boat has a flat keel, or bottom, that barely dips below the water's surface. That means less water pushes against the keel. And because less water is pushing against the boat, it experiences little drag (a stowing force) as it sails.
So did McDonald really eat 15 million ice cream treats to get the sticks? No! Most were donated by an ice cream company, while others were sent to him by children from around the world.
Source: Scholastic SuperScience
posted by James at 11:39 AM
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