The thermometers show the variation in temperatures of a rod at different points. What process of heat transfer causes this variation? conduction convection emission radiation

conduction

Explanation:

Heat conduction is the transfer of internal thermal energy by the collisions of microscopic particles and movement of electrons within a body. The microscopic particles in the heat conduction can be molecules, atoms, and electrons(Science direct).

From the statement above, heat is transferred via conduction when the particles in a body collide with each other. The heat energy gradually travels through the entire length of the material(initially found to exhibit variation in temperature with length) causing an increase in temperature starting at the part of the rod directly exposed to the heat source until the temperature becomes uniform throughout the rod.

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

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