For a convection cell to be set up in a fluid, it must be heated from below and be able to radiate heat from the top. Convection cells occur when a particular packet of fluid becomes trapped in a cycle of heating and coo... More » Science Chemistry

Cell elongation is the lengthening of a cell during the cell differentiation process in the growth of a new organism or during movement in mature plants. Cell elongation occurs in both plants and animals. More » Science Biology Cells

Having a "sickle cell trait" means that a person has inherited the sickle cell gene from one parent. This differs from sickle cell disease, in which a person inherits the gene from both parents, notes WebMD. People with ... More » Health Conditions & Diseases
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Common examples of convection include the boiling of water where bubbles become visible at the top, drinking coffee where steam rises upwards, using a fan to cool off the body and heating a room during the cold season. C... More » Science Chemistry

Convection is the heat transfer due to the motion of a fluid, such as a gas or liquid, that carries heat energy away from a heat source. Conduction instead occurs between materials in contact with each other without any ... More » Science Physics Electricity

Mantle conviction is the process in which heat is transferred from the Earth's core to its surface; heat is released from the core and rises, causing temperature fluctuation where the excess temperature from the hot magm... More » Science Earth Science Layers of the Earth

Convection currents occur in the Earth's geosphere, atmosphere and hydrosphere when heat is transferred from one place to another. Heat energy moves from hot places to cold places during convection. More » Science Physics Electricity