Saturday, January 1, 2011

Catapults at White Rock, BC

Activity date: Christmas Day 2010
Energy level: 2/10
Cost: $0

We go to White Rock quite often in summer. Every second store along the waterfront sells ice-cream or sorbet. In the winter, most of the ice-cream stores are closed. But this particular day, we had a plan.

We took a picnic and half a dozen rubber bands. Our goal was to find ways to launch pebbles into the ocean. As we were heading out the door we met some neighbors. It was raining quite hard, and they were puzzled when I told them we were going to the beach. I explained that where I come from, that's what you do on Christmas Day. They pointed out that we're in the Northern Hemisphere now.

By the time we got to White Rock, the rain had stopped. It was a cool day, with no wind.

We tried using the rubber bands to fling stones, and searched for Y-shaped sticks to make catapults. You never seem to be able to find one when you want one. We found a few good candidates.



The most effective catapult system resembled a child's teeter-totter: a piece of driftwood for the pivot, and a strip of wood placed across it. Place a rock on one end, weighing it down. Drop a larger rock on the end of the wood that's sticking up in the air.

Later we went bouldering along the rocks from the pier to the small beach to the north. Both boys are quite agile, but there were some scrapes and bruises along the way.

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