Why does your temperature gauge rise and lower only when you have the heat on?
The gauge does not cause the heat; it only shows what it is.
The name for the thermal energy transferred only from a higher temperature to a lower temperature is heat. Heat naturally flows from a region of higher temperature to a region of lower temperature until thermal equilibrium is reached.
The atmosphere has lower heat capacity
If the temperature gauge and heat only work while the engine is idling, it may indicate a problem with the cooling system, such as a malfunctioning thermostat that is stuck open, preventing the engine from reaching optimal operating temperature. Additionally, low coolant levels or a failing water pump could impede proper circulation, affecting heat output. When idling, the engine runs at a lower RPM, which can sometimes allow for temporary heat buildup, but once the vehicle is in motion, the cooling system may not function effectively, leading to a drop in heat and gauge readings.
No. Heat is conducted from a region of high temperature to that of lower temperature. If the whole rod is at the same temperature then there is no temperature gradient and so no heat will be conducted.
High temperature doesn't necessarily indicate heat transfer if the surrounding environment is at a similar or lower temperature. Heat transfer occurs when there is a temperature difference between objects, causing energy to move from a higher temperature object to a lower temperature one. If the surroundings are not significantly cooler, there may be high temperature but minimal heat transfer.
No, energy can still be transferred by heating even when there is a temperature difference. Heat will flow from the object or system with higher temperature to the one with lower temperature until thermal equilibrium is reached. The temperature difference determines the direction and rate of heat transfer.
The atmosphere has a lower heat capacity.
The atmosphere has a lower heat capacity.
If only the temperature gauge does not work, then a fuse is not the problem. Be sure that the radiator is full. If not you will need to fill it as the temperature sender needs water around it in order to have something to sense. If it is full then take it to a repair shop and have them check it out.
The atmosphere has a lower heat capacity.
The atmosphere has a lower heat capacity.