Geometry Unit C hapter 5 - Temp & Mass Lesson 5.1

Fill in the blanks. 125cm = ______m _____g = 170mg 56L = _____ml 2.05km = _____cm

Fill in the blanks. 125cm = ______m _____g = 170mg 56L = _____ml 2.05km = _____cm

*Hand in Conversion Booklet Completed (all except Worksheet 5, 15) *Conversion Quiz Tuesday

Temperature Conversions M2 - Demonstrate an understanding of the imperial system by describing the relationship of the units for temperature

In Canada, temperatures are measured using the Celsius scale, but there are some cases where the Fahrenheit scale is also used. Can you think of any? Some places where we would see Fahrenheit would be your oven, and many trades people such as bricklayers and welders.

What Celsius temperature do you think corresponds to 0°F? What do you think is normal room temperature? 20°C or 68°F At what temperature do you think you would begin to feel hot? 28°C or 82°F

boiling point of water freezing point of water very cold day very hot day comfortable day average room temperature healthy body temperature topicoCoF Equivalencies in Celcius and Fereinheit

There are formulas to convert temperatures from Celsius to Farenheit. F = 9/5C + 32 Examples: 28°C = ____°F -20°C =____°F Your Turn - Convert these: 4°C = ____°F -10°C =____°F

What if you have to change fahrenheit to celcius? Fa renheit to Celsius Examples: 350°F = _____°C87oF = ______ °C Convert these: 45oF -15oF C = 5/9(F-32)

Now can we simplify the formulas so that we can convert the temperatures in our head. C = 1/2(F-30) F = 2C +30 Let's convert the same questions using the simplified formula. 300°F = _____°C 45°C = ____°F -10°C =____°F Short Cut using Mental Math.....

Convert -4°F to degrees Celsius. C = 5/9[(-4)-32] C = -20°C Then convert 0°F to degrees Celsius. C = 5/9[(-4)-32] C = °C Since -19 is between -20 and , it falls within the safe range.

Assignment: Text Page 193 #1-4 & 6