Fungus gnats are small, dark, short-lived gnats, of the families Sciaridae, Diadocidiidae, Ditomyiidae, Keroplatidae, Bolitophilidae, and Mycetophilidae (order Diptera); they are sometimes placed in the superfamily Mycetophiloidea. The larvae feed on plant roots and fungi, helping in the decomposition of organic matter.
In each of these situations, you experienced the work of the three types of heat transfer: conduction, convection, and radiation. Conduction, or direct heat, occurs when the faster moving molecules of the fire collide with the cooler molecules of the marshmallow, causing them to move faster and become hot.
Describe the three methods of heat transfer. Explain how convection in the asthenosphere (lower mantle) creates the plate movement that forms the convergent and divergent boundaries. ! Explain how Earthâs surface is recycled. Heat Transfer â¢ Heat is energy that travels from one object to another because of temperature differences. â¢ Which way does heat flow? High Temperature --> Low Temperature