Key concepts
Density
Body composition
Muscle and fat
From National Science Education Standards: Characteristics of organisms
Introduction
Your body has a lot of different kinds of materials in it. There are, of course, bone, blood, fat and muscle—just to name a few.
But all of these parts are hidden away under our skin, so how can we learn more about some of their qualities? Animals have a lot of the same insides as we do, so we can learn some interesting things about our bodies by studying something as basic as meat you can buy at the store. One easy and fun test to do is examining whether substances float in water—which tells us how buoyant they are. More about buoyancy in a moment.
To read the full, original article click on this link: Sink or Swim: Muscle versus Fat: Scientific American
Author:
