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Practice converting temperatures between Fahrenheit and Celsius scales, comparing, contrasting, and converting measurement units to solve problems. Learn to write equations, replace variables, and simplify conversions in this interactive lesson.
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Lesson Menu Main Idea and New Vocabulary NGSSS Example 1: Convert Temperatures Example 2: Convert Temperatures Example 3: Convert Temperatures Example 4: Convert Temperatures Five-Minute Check
Convert temperatures between the Fahrenheit and Celsius scales. • degree • Celsius (°C) • Fahrenheit (°F) Main Idea/Vocabulary
MA.8.G.5.1 Compare, contrast, and convert units of measure between different measurement systems (US customary or metric (SI)) and dimensions including temperature, area, volume, and derived unitsto solve problems. Also addresses MA.8.A.4.1 NGSSS
Write the equation. Replace C with 68. Multiply. Simplify. Convert Temperatures Complete the conversion. Round to the nearest hundredth if necessary.68°C = __°F Answer: So, 68°C = 154.4°F. Example 1
Complete the conversion. Round to the nearest hundredth if necessary.45°C = __°F A. 7.2 B. 65 C. 81 D. 113 Example 1 CYP
Write the equation. Replace C with –25. Multiply. Simplify. Convert Temperatures Complete the conversion. Round to the nearest hundredth if necessary.–25°C = __°F Answer: So, –25°C = –13°F. Example 2
Complete the conversion. Round to the nearest hundredth if necessary.–18°C = __°F A. –64.4 B. –32.4 C. –27.8 D. –0.4 Example 2 CYP
Write the equation. Replace F with –6. Simplify. Multiply. Convert Temperatures SCIENCE The freezing point of salt water is –6° Fahrenheit. Write this temperature in degrees Celsius. Example 3
Convert Temperatures Answer: The freezing point of salt water is about –21.1°C. Example 3
WEATHER The outside temperature is 15° Fahrenheit. Write this temperature in degrees Celsius. Round to the nearest tenth if necessary. A. –17°C B. –9.4°C C. 27°C D. 59°C Example 3 CYP
Method 1 Use the equation F = C + 32. Write the equation. Replace C with 21. 9 __ 5 Multiply. Simplify. Convert Temperatures VACATION Tomas is traveling to New Zealand in March. He read that the average temperature in March is 21° Celsius. Write this temperature in degrees Fahrenheit. Example 4
Method 2 Use the equation C = (F – 32). C = (F – 32) 21 = (F – 32) ● 21 = ● (F – 32) Multiply each side by . 5 9 9 9 5 5 5 __ __ __ __ __ __ __ 5 9 5 9 5 9 9 Convert Temperatures Write the equation. Replace C with 21. 37.8 = F – 32 Simplify. + 32 + 32 Add 32 to each side. 69.8 = F Simplify. Example 4
Convert Temperatures Answer: The average temperature in March is about 69.8°F. Example 4
WATER The recent temperature of the water along the Pacific coast was 16° Celsius. Write this temperature in degrees Fahrenheit. Round to the nearest tenth if necessary. A. –16°F B. –8.9°F C. 28.8°F D. 60.8°F Example 4 CYP
Complete the conversion. Round to the nearest hundredth if necessary.63ºC = __ºF A. 17.2 B. 31 C. 113.4 D. 145.4 Five Minute Check 1
Complete the conversion. Round to the nearest hundredth if necessary.102ºC = __ºF A. 215.6 B. 183.6 C. 70 D. 38.8 Five Minute Check 2
Complete the conversion. Round to the nearest hundredth if necessary.__ºC = 18ºF A. –14 B. –7.78 C. 32.4 D. 64.4 Five Minute Check 3
Complete the conversion. Round to the nearest hundredth if necessary.__ºC = 113ºF A. 203.4 B. 171.4 C. 81 D. 45 Five Minute Check 4
The formula can be used toconvert temperatures from the Kelvin scale to the Fahrenheit scale. Which of the following shows the correct steps to convert 95ºF to Kelvin? A.Subtract 459.67 from 95. Then multiply by 5 and divide by 9. B.Multiply 95 by 5. Then divide by 9 and add 459.67. C.Add 459.67 to 95. Then multiply by 5 and divide by 9. D.Multiply 95 by 5. Then divide by 9 and subtract 459.67. Five Minute Check 5