Astudent visits the beach during a very hot day. she steps on the sand and jumps because it is so hot. what type of heat transfer is demonstrated by the sand in this example?

Answer is: thermal conductuction.
Thermal conductuction is the transfer of heat through physical contact. Thermal conduction is the transfer of heat by microscopic collisions of particles. Heat spontaneously flows from a hotter to a colder body.
The process of heat conduction depends on four basic factors: the temperature gradient, the cross section of the materials involved, their path length and the properties of those materials.

Talc (french chalk) is the ingredient

The correct answer should be "electrons orbit the nucleus in circular motions exactly as shown on the classic bohr model."