Integrated Science – Day 3
Today students learned more about the process of photosynthesis, and the many factors that can effect it. They then measured the rate of photosynthesis in hornwort, a small aquatic plant, and then designed a controlled experiment to test the effect of one variable that they thought would affect photosynthesis. They analyzed the data they collected and made conclusions based on their evidence.
Students also performed water quality testing and looked at the effects of pollutants on daphnia (small aquatic crustaceans commonly called water fleas).
Game Day STEM – Cycling Fun!
The quest for the optimal knee flexion angle continues! Today we shifted our focus from achieving the highest vertical jump to figuring out how to reach the fastest cycling speeds through the power of our knees and how we choose to bend & extend them. Students played the role of cycling coaches and analyzed various training video clips to try and determine the knee flexion range that produced the best results in terms of both power and speed. (Fun Fact: The current high speed cycle record was set by American cycler Denise Mueller-Korenek in 2018 when she accelerated up to a speed of 183.93 mph after being initially dragged by a race car to a “starting speed” of 100mph.)
Ask your camper: What is the optimal knee flexion angle that gives bicyclists maximum efficiency? (Maximum efficiency occurs when the minimum knee flexion occurs at approximately 67°- 70° and the maximum knee flexion occurs at around 120°-130°.)
Chemapalooza’s Cool Crystals
Crystals are one of earth’s most beautiful and fascinating creations, and today our scientists took a look at how they are formed! First the campers learned about the chemistry behind crystals through testing what solutes would dissolve in different solvents. Finally the campers used pipe cleaners and a saturated alum solution to create their own crystals overnight. We can’t wait until tomorrow when we will get to see how the crystals turned out!
Ask your camper: What’s the technical term for something that gets dissolved? (solute) What’s the technical name for something that does the dissolving? (solvent)