Sometimes an isolated block of ice, perhaps more than a kilometer across, persists in a ground moraine, an outwash plain, or valley floor after a glacier retreats. Perhaps 20 to 30 years are required for it to melt. In the interim, material continues to accumulate around the melting ice block. When the block finally melts, it leaves behind a steep-sided hole. Such a feature then frequently fills with water. This is called a kettle. Locate several named kettles that are ponds or lakes on this map and identify their general location:
A sinuously curving, narrow ridge of coarse sand and gravel is called an esker. Eskers form along the channel of a meltwater stream that flows beneath a glacier, in an ice tunnel, or between ice walls beneath the glacier. As a glacier retreats, the steep-sided esker is left behind in a pattern roughly parallel to the path of the glacier.
What will be an ideal response?
Peter White Lake, Green Lake, Hammer Lake in the NW section.
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Which station has the most humid air? Look for the station with the highest dew point. What is the name of the city, and what is the dew point? Which type of air mass is over this city?
Use an atlas to identify the weather station:
The chemical formula for dolomite is CaCO3. Indicate whether the statement is true or false
Sea snakes have skin that is ________.
A. impervious to salt B. permeable to salt C. impervious to gases D. poisonous
Recently, geologists have been analyzing ________ generated by tidal friction, ocean waves, and storms to gain an even more detailed image of the crust and upper mantle.
A. ocean currents B. water movement C. light sources D. evaporation E. energy waves