Aerial view of Glaciers
According to the National Park Service (NPS), the wilderness of Glacier Bay includes tidewater glaciers, snow-capped mountain ranges, ocean coastlines, deep fjords and freshwater rivers and lakes.
What makes this wilderness unique is the role glaciers have played in this environment for at least the last seven million years. Most glaciers in the bay are experiencing significant retreat, thinning or stagnation, all giving rise to ecological succession. The succession processes are so evident in the park, that it offers various opportunities for scientific observation for geologists, plant ecologists and other scientists to study this dynamic environment. Location: Glacier Bay National Park. Author: Karl Spencer.
The rocks in this scene were formed from a past lava flow. Over time, the rocks have eroded into smaller rocks due to mechanical weathering, which has started to change this igneous rock into sedimentary rock. Would this change be considered a physical or chemical change? Justify. Location: Big Island in Hawaii. Author: Karl Spencer.
In this scene tree roots are weathering the surrounding soil. Use this slide for vocabulary enhancement. Location: Mercer Arboretum, Author: Deena Logan.
In this scene, a rock is suspended near a platform overlooking the Grand Canyon. Researchers have estimated that the canyon floor is 100 meters from this rock (approximately 6000-kg). Calculate the Gravitational Potential Energy of the rock. Justify. Location: Grand Canyon National Park (South Rim). Author: Karl Spencer.