When Surface Water Sinks and Mixes with Deep Water Allowing

question 8

Multiple Choice

When surface water sinks and mixes with deep water allowing the water temperature to equalize in a lake, this causes a lake turnover that typically occurs in what season(s) ? _______________

• A) Spring only
• B) Summer only
• C) Spring and fall
• D) Summer and winter

---

Definitions:

Coal

Coal is a combustible black or brownish-black sedimentary rock used primarily as an energy source and for heating.

Oil

Triglyceride, usually of plant origin, that is composed of glycerol and three fatty acids and is liquid in consistency due to many unsaturated bonds in the hydrocarbon chains of the fatty acids.

Hydropower

The use of flowing or falling water to generate electrical energy.

Natural Gas

A fossil fuel formed from plants and animals buried under the earth and ocean floors, used as a source of energy for heating, cooking, and electricity generation.