bio lab report on insulators
The Effect of Different Types of Insulation on Heat Retention
Aim
I am going to investigate the effect of different types of material on heat retention. "Which of the four materials, cotton, foam, aluminium foil and bubble wrap, is the best insulator?"
Hypothesis
The four materials tested in this experiment are cotton, foam, aluminium foil, and bubble wrap. Materials that are good insulators will absorb heat slowly and therefore the water inside the cup will stay warm for a longer period of time. Materials vary in their heat conductivity and in their insulation capacity. Foam is 95 percent air so the air molecules slow down the heat transfer from the liquid, so it stays warmer longer than cotton insulation. This leads me to predict that foam would be the best insulator, as it would trap the heat more, which will cause deficient heat lost.
Identification of Variables
There are three variables I will take in consideration whilst carrying out my investigation. The independent variable will be the types of materials used for insulation, which will be cotton, newspaper, aluminium foil, and black insulator. My control variables would be the temperature of the water, 80° Celsius. The dependent variable in my investigation will be the amount of heat loss.
Scientific Theory
The different types of energy transfers that will be taking place during this experiment will be conduction, convection, insulation, and radiation. Heat is transferred from one material to another through conduction. That happens when the water comes into contact with the cup itself. Materials that are good at conducting heat absorb the heat of the liquid quickly, and therefore, the liquid cools down. This happens when the heat energy is transferred from the water to the cup and then from the cup to the material around it. If the material is a good conductor, the heat absorbed would be faster so the heat loss from the water
Aim
I am going to investigate the effect of different types of material on heat retention. "Which of the four materials, cotton, foam, aluminium foil and bubble wrap, is the best insulator?"
Hypothesis
The four materials tested in this experiment are cotton, foam, aluminium foil, and bubble wrap. Materials that are good insulators will absorb heat slowly and therefore the water inside the cup will stay warm for a longer period of time. Materials vary in their heat conductivity and in their insulation capacity. Foam is 95 percent air so the air molecules slow down the heat transfer from the liquid, so it stays warmer longer than cotton insulation. This leads me to predict that foam would be the best insulator, as it would trap the heat more, which will cause deficient heat lost.
Identification of Variables
There are three variables I will take in consideration whilst carrying out my investigation. The independent variable will be the types of materials used for insulation, which will be cotton, newspaper, aluminium foil, and black insulator. My control variables would be the temperature of the water, 80° Celsius. The dependent variable in my investigation will be the amount of heat loss.
Scientific Theory
The different types of energy transfers that will be taking place during this experiment will be conduction, convection, insulation, and radiation. Heat is transferred from one material to another through conduction. That happens when the water comes into contact with the cup itself. Materials that are good at conducting heat absorb the heat of the liquid quickly, and therefore, the liquid cools down. This happens when the heat energy is transferred from the water to the cup and then from the cup to the material around it. If the material is a good conductor, the heat absorbed would be faster so the heat loss from the water