Before Ice Can Form on a Lake, All the Water

question 26

Multiple Choice

Before ice can form on a lake, all the water in the lake must be cooled to

• A) 4 degrees C.
• B) minus 32 degrees C.
• C) zero degrees C.
• D) None of the above are true. Ice can form at the surface regardless of the water temperature below.

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Definitions:

Calcium Carbonate

A chemical compound found in rocks, shells, and marine organisms, commonly used as a building material and in manufacturing.

Limestone

A sedimentary rock composed primarily of calcite or dolomite, often formed from the skeletal fragments of marine organisms.

Stalagmites

Mineral formations that rise from the floor of a cave due to the accumulation of material deposited by dripping water from the ceiling.

Karst Topography

A landscape formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum, characterized by underground drainage systems with sinkholes, caves, and disappearing streams.