About: http://webisa.webdatacommons.org/330535825

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Being less dense than the surrounding cooler air, the hot air will subsequently rise, while the cooler air will sink because they are denser.Convection currents can only occur in fluids such as liquids and gases but not in solids.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com