In the summer,a lake's thin layer of water beneath the top layer where the temperature drops rapidly is known as the ____.
A) halocline
B) thermocline
C) pycnocline
D) hypocline
E) hypercline

Question

In the summer,a lake's thin layer of water beneath the top layer where the temperature drops rapidly is known as the ____.  
A) halocline
B) thermocline
C) pycnocline
D) hypocline
E) hypercline

Quizplus · Accepted Answer

The thermocline is the layer of water beneath the top layer where the temperature drops rapidly. This occurs in the summer in many lakes. The halocline refers to a layer of water where the salinity changes rapidly, the pycnocline refers to a layer where the density changes rapidly, the hypocline refers to a layer where the flow of water changes direction, and the hypercline is not a commonly used term in limnology.

In the Summer,a Lake's Thin Layer of Water Beneath the Top