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PES Skill Sheets.book - Capital High School

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Name: Date:<br />

8.2 Temperature Scales<br />

The Fahrenheit and Celsius temperature scales are commonly used scales for reporting temperature values.<br />

Scientists use the Celsius scale almost exclusively, as do many countries of the world. The United States relies on<br />

the Fahrenheit scale for reporting temperature information. You can convert information reported in degrees<br />

Celsius to degrees Fahrenheit or vice versa using conversion formulas.<br />

Fahrenheit (°F) to Celsius (°C) conversion formula:<br />

Celsius (°C) to Fahrenheit (°F) conversion formula:<br />

• What is the Celsius value for 65° Fahrenheit?<br />

Solution:<br />

• 200 °C is the same temperature as what value on the Fahrenheit scale?<br />

Solution:<br />

o<br />

⎛5⎞ C = ⎜ ⎟ ° F −32<br />

⎝9⎠ ( )<br />

⎛9⎞ ° F = ⎜ ×° C⎟+ 32<br />

⎝5⎠ ⎛5⎞ ° C = ⎜ ⎟(<br />

65° F−32) ⎝9⎠ ⎛5⎞ ° C = ⎜ ⎟(<br />

33 ) = ( 5 × 33 ) ÷ 9<br />

⎝9⎠ ° C = 165 ÷9<br />

° C = 18.3<br />

⎛9⎞ ° F = ⎜ ⎟(<br />

200 ° C) + 32<br />

⎝5⎠ ° F = [ ( 9 × 200 °C ) ÷ 5] + 32<br />

° F = [1800 ÷ 5] + 32<br />

° F = 360 + 32<br />

°<br />

F = 392<br />

8.2

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