SailingQuestion:Howmanyoceansarethereintheworld
PacificOceanAtlanticOceanIndianOceanArcticOceanworldmapexploration1
Whatisanavigator
Whatisthedifferencebetweenanavigatorandanexplorer
Anavigatorexploresnewroutesacrossthesea
Anavigatorexploresthesea;anexplorerdiscoversnewplacesonland
ZhengHeIsheanavigatororanexplorer
HemadesevenvoyagesduringhislifetimeandcontributedgreatlytothescienceofnavigationinChina
compassAstrolabe(星盘)Sextant(六分仪)sea/nauticalchartnavigatorsearlynavigationalinstrumentsSailingtheoceansUsingnatureKeepingalongsidethecoastlineUsingcelestialbodiesUsingwildlifeUsingtheweatherUsingtheseaUsingcelestialbodiestoplotthepositionstoworkoutthelatitudeaspecialcloudformationindicatesthereislandclosebyUsingwildlifeIfseaweedwasfreshandsmelledstrongly,theshipwasclosetoland
Seabirds