Answer :
When a muffin batter is placed in a preheated oven at 200°C, there is a flow of heat due to the difference in temperature between the air inside the oven and the muffin batter.
Here’s what happens step-by-step:
1. Temperature Difference: When you first put the muffin batter into the oven, the temperature of the air in the oven is much hotter (200°C) than the batter, which would be closer to room temperature.
2. Heat Flow: Heat naturally flows from a hotter object or area to a cooler one. In this case, the heat from the oven air flows into the cooler muffin batter.
3. Purpose of Heat Flow: The heat energy transferred from the oven air into the muffin batter causes the batter's temperature to rise. This is necessary for the cooking process to begin, which involves chemical reactions such as the rising of the dough and evaporation of some ingredients.
4. Thermal Equilibrium: The heat will continue to transfer from the oven air to the muffin batter until the batter reaches thermal equilibrium with the oven environment or is removed from the oven after cooking.
So, the direction of heat flow is from the oven air into the muffin batter when it is first placed in the preheated oven.
Here’s what happens step-by-step:
1. Temperature Difference: When you first put the muffin batter into the oven, the temperature of the air in the oven is much hotter (200°C) than the batter, which would be closer to room temperature.
2. Heat Flow: Heat naturally flows from a hotter object or area to a cooler one. In this case, the heat from the oven air flows into the cooler muffin batter.
3. Purpose of Heat Flow: The heat energy transferred from the oven air into the muffin batter causes the batter's temperature to rise. This is necessary for the cooking process to begin, which involves chemical reactions such as the rising of the dough and evaporation of some ingredients.
4. Thermal Equilibrium: The heat will continue to transfer from the oven air to the muffin batter until the batter reaches thermal equilibrium with the oven environment or is removed from the oven after cooking.
So, the direction of heat flow is from the oven air into the muffin batter when it is first placed in the preheated oven.
