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.
Noun. 1. volcano-a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt. vent. crack, scissure, cleft, crevice, fissure-a long narrow opening.eructation, extravasation, eruption - (of volcanos) pouring out fumes or lava (or a deposit so formed).n opening in the earth's crust from which lava, ash, and hot gases flow or are ejected during an eruption. b. A similar opening on the surface of another celestial object. 2. A usually cone-shaped mountain formed from the materials issuing from such an opening.