At the start of our day we had a “Good Vibrations” presentation and demonstration by Joe. He used an oscilloscope on a big screen to show us what sound waves look like, and how different pitches and volumes look. He used a slinky to show us how sound waves travel. It also made cool laser sounds! He inhaled helium to make his voice a high pitch. Then he inhaled sulfur hexafluoride and made his voice a really low pitch. A student volunteer played notes on wine glasses. The glasses with more liquid would make a higher pitch and the glasses with less liquid would make a lower pitch. We learned that humans can hear 20-20 000 Hertz, and whale songs are between 10 and 40 Hertz. Hertz is how we measure frequency. We measure volume in Decibels.
For the rest of our day, we explored the whale exhibit and the rest of Telus Spark with a backpack scavenger hunt. We learned that the blue whale heart is the size of a small car. The first type of whale lived on land. We saw whale skeletons and noticed that their fins looked like hands with five “fingers.” We saw a lot of Maori artifacts. There was a really cool whale video game. There was a sound chamber where we could hear the pitches of different ocean animals. We built phytoplankton and tested to see if they would float. We learned about blubber and got to put our hand in a “blubber glove” to see how it insulates animals. At the end of the day we had a wrap-up demonstration. We learned about the plastic pollution in the ocean and how it is hurting marine life. We saw videos on ways they are trying to clean it up. Alaynna and Sahib got to take plastic garbage out of water but our model plankton got hurt and they couldn’t get the microplastics out!
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AuthorMrs. Karr Archives
April 2018
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