Grand Howl

Category	Activities
Badge	Scientist
Time to allocate (mins)	35
Outcome	Make a boat and race it
Resources	Cardboard, eg cereal box, etc Straws Bottle top Electrical tape Bicarbonate of soda Vinegar
Instructions	This recycled boat was pretty easy to put together. Use recycled cardboard or styrofoam into a triangular shape. To that, we taped a plastic lid. We used two small pieces of straws and taped them to the back of the boat and coming from the lid. With that, our boat was ready for power. A tip for the boat construction: Be sure the straws are taped securely in the lid and parallel to the water surface. Use electrical tape for this job.
Next, fill the lid with bicarb.
Carefully pour in vinegar and watch the boat sail across the water. We noticed that our first run was the best and we think it was because the straws were better positioned at the start of our activity. We also tried aiming the straws down into the water and that seemed to help with powering movement, better too. Do this boat activity in a tub outside.