Just a Minute. Achievement Objective: GM2-1: Create and use appropriate units and devices to measure length, area, volume and capacity, weight (mass), turn (angle), temperature, and time. In these five activities the students develop an understanding of the duration of minutes and seconds. We also practice reading time by counting the minutes after the hour.
Video: Glacial Erosion: Definition, Processes & Features. Glaciers are huge blocks of ice that move along the landscape, carving distinct features along the way. Learn about the glacial erosion processes, plucking and abrasion, and the features they create, including cirque, horns, arÃªte and roche moutonnee.
Glaciers Are Solid RiversA glacier is a large accumulation of many years of snow, transformed into ice. This solid crystalline material deforms (changes) and moves.Glaciers, also known as rivers of ice, actually flow. Gravity is the cause of glacier motion; the ice slowly flows and eforms (changes) in response to gravity. A glacier molds itself to the land and also molds the land as it creeps down the valley. Many glaciers slide on their beds, which enables them to move faster.Rock that falls onto the glacier's surface is incorporated into the glacier and erodes the bed, forming sediment.