Stone Age man knew how to make the hide of a deer into clothing and boots. He also had tools that would have been applied to specific situations. A qualitative observation describes color, shape, temperature, size, smell or any other general observation. A quantitative observation counts the number of objects, measures the length and width, measures the mass or makes another kind of measurement. An educated guess or explanation of something you have seen.
Theories are general explanations of observations and allow for future predictions.
A scientific model is a picture or image of a theory that we as humans can see and that will help us to understand the theory. We cannot see an atom with our vision, but we will look at models of an atom in this course to help us understand. These molecules are in constant motion. As they move they bump into walls and into one another. When they run into one another they don t stick but bounce off of each other.