Oceanography – Shark and Perch Comparisons
The ocean is one of the most diverse habitats, with a great variety of animals at all different depths. Fish are just one of the many different types of animals that call the ocean “home”. Today, our campers explored two types of fish (dissected earlier in the week) – a bony fish (perch) and a cartilaginous fish (spiny dogfish shark). They analyzed the similarities and differences between the two fish side by side, and quite literally got an ‘in depth’ view of the structures and functions of both fishes. One interesting investigation had the campers compare the livers of each fish.
Ask your camper: What happened when you placed both fish’s livers in water? The shark liver (markedly larger) floated while the perch liver sank. Why did this happen? The shark liver is largely involved with helping the shark remain buoyant in the water (perch have a swim bladder to help with buoyancy while the shark doesn’t).
Engineering Explorations – Off to the Races
It was off to the boat races! After a week of perfecting their designs, our engineers finally had the chance to test out their boats. There were two races – one that tested for the speed of the boat and one that tested the load capacity of the boat. First, the boats raced to see which one was the fastest, with there being one winner overall. After that, the boats were set stationary in the water and weight was added to see which design was the lightest while also holding the most weight. Some groups chose to focus on speed while others focused on the load capacity. Were their designs successful in the end? Ask your camper to find out!
Ask your camper: What did your boat look like, and how did it hold up during the races?
Makey Lab – Fairytale Coasters
The fairytale roller coasters are complete. After working hard for two days in groups, the campers finalized and tested their roller coaster designs. The coasters were created for the same fairy tale creatures the campers built houses for earlier in the week! The designs contained twists, turns, drops and loops.
Ask your camper: Were you able to create any loops? If so, how?