Question PSU Geology Sandstones Water & Glaciers Questions Fill in the blank Options (not all will be used): Sandstone, Shale, Colorado Plateau, Pocono Plateau, Calcium Carbonate, Ceiling, Ground, Carbon Dioxide, Carbon Monoxide, springs, rivers, permafrost, 50ft, 100ft, 150 ft, “U”, “V”, 5,000 years, 10,000 years, 90,000 years) ? _______ are rocks made from Sands ? _______ is known for its reddish, flat-lying rocks ? Limestone is chemically__________ ? In a cave, Stalactites form from the _________ ? Groundwater contains higher levels of _________ than rain water; making cave exploring dangerous for breathing. ? Sinkholes often are connected to _________ ? _____________ describes a layer of ice several feet down that never unthaws ? Typically, ice thicker than _______ will deform and flow, making a glacier ? Often a ________ shape valley is evidence of glacier activity ? Over the last 1 million years or so; Ice has generally grown and receded at a rate of 90,000 years growth and ______receding. Essay Responses 1) Describe an exceptional example of water flow in a National Park of your choice. A waterfall, a river, springs, geysers, etc. Be sure to describe the impact it makes on the environment in addition to its characteristics and origin. 2) Today, Glaciers are still receding from the recent Ice Age. How do Glaciers modify a landscape? Describe their movement over time and mechanism for progression. Please cite a specific glacier in your answer. 3) What are some examples of Glacier Activity in Glacier National Park? Describe their formation and recession.