What is the conversion of 140 degrees Fahrenheit to Celsius?
A) 60°C
B) 70°C
C) 100°C
D) 120°C
The Correct Answer and Explanation is :
To convert Fahrenheit to Celsius, you can use the formula:
[
C = \frac{(F – 32) \times 5}{9}
]
where ( C ) is the temperature in degrees Celsius and ( F ) is the temperature in degrees Fahrenheit.
For the conversion of 140 degrees Fahrenheit:
- Subtract 32 from the Fahrenheit temperature:
[
140 – 32 = 108
] - Multiply the result by 5:
[
108 \times 5 = 540
] - Divide the result by 9:
[
\frac{540}{9} = 60
]
Thus, 140 degrees Fahrenheit is equal to 60 degrees Celsius.
Correct Answer: A) 60°C
Explanation
Understanding the conversion between Fahrenheit and Celsius is crucial, especially in contexts like cooking, science, or when traveling. The two temperature scales have different starting points and increments. The Fahrenheit scale sets the freezing point of water at 32°F and the boiling point at 212°F, while the Celsius scale defines the freezing point at 0°C and the boiling point at 100°C.
When converting temperatures, it’s important to follow the correct formula to ensure accuracy. The formula for conversion accounts for the difference in scale increments—Fahrenheit degrees are smaller than Celsius degrees. Therefore, the multiplication factor of ( \frac{5}{9} ) is applied after adjusting for the offset of 32 degrees.
Using the formula effectively requires careful arithmetic. The step of subtracting 32 is critical because it aligns the temperature with the corresponding values on the Celsius scale. The multiplication by 5 adjusts for the relative size of the increments, while dividing by 9 brings the result into the Celsius scale.
In practical scenarios, having a reliable method to convert these temperatures can help avoid confusion, especially in recipes or scientific experiments that require precise measurements. Knowing that 140°F corresponds to 60°C can also help gauge temperature comfortably across different contexts and systems of measurement.