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The Real-World Science Supplement
to Scholastic News.
a person who plans, builds, and tests new designs to solve problems
Bill King is an engineer who built a motorcycle that could ride on water.
early models of a machine
NASA tests prototypes of vehicles on Earth before sending them to space.
a force that opposes the motion of an object moving through water or air
Choppy water causes drag that makes a boat slow down.
the ability to float in a liquid or air
The buoyancy of a boat can be affected by its shape and weight.