Experiment 301 is about linear expansion. When there is a change in temperature, all materials, whether it is solid, liquid or gas, experience a change in dimension. This phenomenon is called thermal expansion. When a material is heated, the molecules moves begin moving more, which takes up more space due to its movement, this means the material will expand. Generally, dimension increases as temperature increases. Linear expansion is one type of thermal expansion and it is the change in length of a material as it experiences changes in
