Science in the community

Ana, Mackenzie, Eric, Jacob, and Erick doing the candle demo

On Valentine’s Day, 5 members of YHS SNHS visited Freedom Elementary School to spread some science love. Jacob, Eric, Ana, Mackenzie and Erick shared their knowledge about density with Mrs. Roland’s 7th grade science classes. The SNHS students demonstrated density by having the 7th grade students make observations about a small candle in water and a large candle in ethanol. The density of the candle compared to the ethanol makes the candle sink. However, the same candle floats when placed in water.

Candles in ethanol and water

The 7th grade students where then tasked with creating a density column using their new knowledge of density. The 7th grade students where given different colored liquids of different densities. They could then add them to a test tube in order of highest density to lowest density to create a colorful column. These columns are possible because a water solution with more sugar is more dense, causing the different layers to not mix!

Density column!

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