Final answer:
A fish that swims seven eighths of the depth of a 32-foot deep lake swims a total of 28 feet downward to reach warmer waters during winter.
Step-by-step explanation:
When freshwater fish sense the water getting colder during the winter, they instinctively move towards the bottom of lakes and rivers to find warmer areas, which remain liquid due to the property of water being densest at around 4 °C (39.2 °F). If a fish swims seven eighths of the depth of a lake that is 32 feet deep, we perform a calculation to find the distance the fish swam.
To calculate the distance the fish swam, multiply seven eighths (7/8) by the total depth of the lake:
- 7/8 of 32 feet = (7/8) * 32 = 28 feet
Therefore, the fish swam 28 feet down to stay within the warmer, denser water at the bottom of the lake.