In this biology lesson, we dissected a frog in order to observe the external and internal structures of frog anatomy.
In this biology lesson, we dissected a frog in order to observe the external and internal structures of frog anatomy.
Today the boys learned how Resistor's work and the theory of OHM's Law. They worked on a LED circuit on their Arduino's to get a better understanding.
So what happened? The bone that was in the water container smelled awful, retained its color and was still hard. The one in the vinegar container was odorless and the bone was softer. What is so special about vinegar that it can make a hard bone soft? Vinegar is considered a mild acid, but it is strong enough to dissolve away the calcium in the bone. Once the calcium is dissolved, there is nothing to keep the bone hard - all that is left is the soft bone tissue. That is why it is very important to include calcium in your diet.
This evening was filled with lots of excitement. Jaedan got two of the sensors to function correctly.