Lesson Menu Main Idea and New Vocabulary NGSSS Example 1:Convert Temperatures Example 2:Convert...

Main Idea and New Vocabulary

Example 1: Convert Temperatures

Five-Minute Check

• Convert temperatures between the Fahrenheit and Celsius scales.

• degree

• Celsius (°C)

• Fahrenheit (°F)

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 units to solve problems.

Also addresses MA.8.A.4.1

Convert Temperatures

Complete the conversion. Round to the nearest hundredth if necessary.68°C = __°F

Write the equation.

Replace C with 68.

Multiply.

Simplify.

Answer: So, 68°C = 154.4°F.

A. 7.2

D. 113

Complete the conversion. Round to the nearest hundredth if necessary.45°C = __°F

Complete the conversion. Round to the nearest hundredth if necessary.–25°C = __°F

Write the equation.

Replace C with –25.

Multiply.

Simplify.

Answer: So, –25°C = –13°F.

A. –64.4

B. –32.4

C. –27.8

D. –0.4

Complete the conversion. Round to the nearest hundredth if necessary.–18°C = __°F

SCIENCE The freezing point of salt water is –6° Fahrenheit. Write this temperature in degrees Celsius.

Write the equation.

Replace F with –6.

Simplify.

Multiply.

Answer: The freezing point of salt water is about –21.1°C.

A. –17°C

B. –9.4°C

C. 27°C

D. 59°C

WEATHER The outside temperature is 15° Fahrenheit. Write this temperature in degrees Celsius. Round to the nearest tenth if necessary.

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.

Write the equation.

Replace C with 21.

Multiply.

Simplify.

Method 1 Use the equation F = C + 32.__95

Write the equation.

Replace C with 21.

Simplify.

Method 2 Use the equation C = (F – 32).__59

Multiply each side by .__95

Add 32 to each side.

Simplify.69.8 = F

37.8 = F – 32

+ 32 + 32

● 21 = ● (F – 32)__95

21 = (F – 32)__59

C = (F – 32)__59

Answer: The average temperature in March is about 69.8°F.

A. –16°F

B. –8.9°F

C. 28.8°F

D. 60.8°F

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. 17.2

C. 113.4

D. 145.4

Complete the conversion. Round to the nearest hundredth if necessary.63ºC = __ºF

A. 215.6

B. 183.6

D. 38.8

Complete the conversion. Round to the nearest hundredth if necessary.102ºC = __ºF

A. –14

B. –7.78

C. 32.4

D. 64.4

Complete the conversion. Round to the nearest hundredth if necessary.__ºC = 18ºF

A. 203.4

B. 171.4

Complete the conversion. Round to the nearest hundredth if necessary.__ºC = 113ºF

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.

The formula can be used to

convert temperatures from the Kelvin scale to the Fahrenheit scale. Which of the following shows the correct steps to convert 95ºF to Kelvin?

Lesson Menu Main Idea and New Vocabulary NGSSS Example 1:Convert Temperatures Example 2:Convert...

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