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.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

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