Suppose you are sitting next to a fireplace in which there is a fire burning. One end of a metal poker has been left in the fire. Which one of the following statements concerning this situation is true?

Options

A. You can feel the heat of the fire primarily because of convection.
B. The end of the poker that is not in the fire is warmed through conduction.
C. Heat escapes through the chimney primarily through through conduction.
D. You can feel the heat of the fire primarily because of conduction.

Answer

To solve the question regarding the situation of sitting next to a fireplace with a metal poker, we will analyze the heat transfer mechanisms involved.

### Step-by-Step Solution:

1. **Identify the Heat Transfer Mechanisms**:
- There are three primary modes of heat transfer: conduction, convection, and radiation. We need to determine which of these mechanisms is primarily responsible for the heat you feel from the fireplace.

2. **Conduction**:
- Conduction is the transfer of heat through direct contact between materials. In this scenario, one end of the metal poker is in the fire. The heat from the fire will transfer to the poker through conduction. This means the end of the poker that is in the fire will heat up and then transfer that heat to the other end of the poker that is not in the fire.

3. **Convection**:
- Convection involves the transfer of heat through the movement of fluids (liquids or gases). The air around the fireplace gets heated by the fire and rises. However, the heat you feel from the fireplace is not primarily due to convection because the heated air tends to rise and does not directly reach you in significant amounts.

4. **Radiation**:
- Radiation is the transfer of heat in the form of electromagnetic waves. The heat from the fire radiates outwards and can be felt even without direct contact. This is a significant way you feel warmth from the fireplace.

5. **Evaluate the Statements**:
- The statement "You can feel the heat of the fire primarily because of convection" is incorrect because convection does not effectively transfer heat to you in this scenario.
- The statement "The end of the poker that is not in the fire is warmed through conduction" is correct because heat travels along the poker from the hot end to the cooler end.
- The statement "Heat escapes through the chimney primarily through conduction" is incorrect because heat escapes through convection as the heated air rises.
- The statement "You can feel the heat of the fire primarily because of conduction" is also incorrect as you are not in direct contact with the fire.

### Conclusion:
The correct statement regarding the situation is: **"The end of the poker that is not in the fire is warmed through conduction."**