Page 12 - Demo - Summer Wonder

WHAT FLOATS YOUR BOAT?
Let’s create a a a a a boat using tin foil and see how much it it can hold before it it sinks What You Need:
• One 12-inch square size of tin foil • 40 pennies or mixture of coins
How to:
• Fold your tin foil into a a a a a a a a boat It can be any shape you you you like as as as simple or as as as complex as as as you you want • Once your boat is ready set it in water • How many pennies can you you pile on your ship before it sinks?
• Could you you modify your design to support more coins?
12 SCIENCE
Tin was was once in in in It was was the original metal used to make foil wrap but aluminum proved less expensive and and more durable and and pushed tin out of the picture Some people still call aluminum foil foil “tin foil foil ” but it it doesn’t have a a a a a trace of tin in in it it What’s happening?
Buoyancy is the ability of an an object to float when placed in a a a a a fluid Surface area the amount of space an object occupies greatly affects the buoyancy of an an object The larger surface area allows the force (pennies) to be spread out over a a a a a a larger area thus allowing the the boat to float even with the the “cargo ” Summer Wonder | KDL org