Density currents drive 3D movements within the world’s oceans that dwarf surface currents by volume. Density-driven movements due to temperature/salinity differences keep the world’s oceans well mixed & help to re-distribute heat from tropical areas towards polar areas. Resultant upwelling creates some of the world’s richest ocean ecosystems. Density movements known as turbidity currents are the world’s largest
Few people are familiar with the fascinating stories that Arctic and Antarctic explorers have to share. Students will research an explorer and create a dangling string with key information and highlights from the expedition(s) of that explorer.
Objective
To learn about polar explorers and polar expeditions.
Preparation
Gather needed materials. Have the explorers' information and photos