Question

In many temperate lakes, thermal energy from sunlight causes changes in the temperature of surface waters. These changes initiate a turnover, a mixing of waters that occurs in spring and fall. Determine the correct order of events involved in seasonal turnover. Drag the labels onto the flowchart of seasonal turnover. Labels may be used once, more than once, or not at all.

Answer 1

The phenomenon lake turnover is the process whereby water turns over from above (epilimnion) to bottom (hypolimnion). In the summer season the epilimnion is at its warmest, due to exposure to the sun, and the hypolimnion is the coldest, due to the sun rays not reaching the bottom.

During the season fall the epilimnion begins to cools, causing it to become dense and sink. This causes the hypolimnion water to rise, thus turning over the layer.

Step-by-step explanation:

Lake turnover is defined as a seasonal movement of lake water twice a year (spring and fall). This is due to different temperatures of the water above and below. Different sizes of lakes will experience lake turnover at different levels. Shallow lakes experience lake turnover as little as possible, while large lakes experience major changes.