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Selected answers to common questions:
Celsius to Fahrenheit.
- Adding and Subtracting Negative Integers as Temperatures [01/08/2004]
If it's -20 degrees outside and it decreases 3 degrees what
temperature is it? I know the answer is -23 degrees but it seems like
it should be -17 degrees.
- Celsius and Fahrenheit Conversions [09/15/1997]
For what value of C do both scales represent the same temperature?
- Celsius to Fahrenheit [04/26/1999]
How do you convert Celsius to Fahrenheit?
- Changing Celsius to Fahrenheit [9/9/1996]
How do you change Celsius to Fahrenheit?
- Converting between Celsius and Fahrenheit [06/23/2009]
How can I use algebra to derive the unusual temperature conversion
formulas °F = 9/5(°C + 40) - 40 and °C = 5/9(°F + 40) - 40 ?
- Converting Celsius to Fahrenheit [2/28/1996]
What is the Fahrenheit equivalent for 15 million degrees centigrade?
(That's the temperature at the center of the sun.) What is the Fahrenheit
equivalent of -150 degrees Celsius, and how does this differ from
centigrade? To convert 500 degrees centigrade to Fahrenheit, what figures
do I use?
- Converting Celsius to Fahrenheit and Why It Works [04/03/2004]
What are the Fahrenheit and Celsius patterns that will help me predict
Fahrenheit temperature based on the Celsius temperature?
- Converting Fahrenheit to Celsius [9/29/1995]
Is there a temperature that is the same on both the Celsius and
- Decreasing by Degrees [01/07/2016]
A teacher wonders about her choice of context for a problem designed
to elicit subtraction of a negative number. Doctor Peterson provides
troubleshooting linguistic, mathematical, and instructional.
- Degrees Kelvin [04/16/2002]
Why is it considered to be wrong to write, for example, 0 degrees
- Derive the Function of Celsius to Fahrenheit [09/22/1997]
How do you get the equation of Celsius to Fahrenheit and vice versa? How
would you graph that function?
- Deriving the Celsius-to-Fahrenheit Conversion Formula [12/03/2001]
What is 27 degrees Celsius above freezing in Farenheit?
- Dimensional Analysis and Temperature Conversion [04/13/2002]
I understand that you can use cross multiplication to find how many
centimeters equal a certain number of inches, but I get confused when
I try to apply the same logic when converting from Celsius to
- Doubling Zero? [02/13/2007]
I have a student who asked, 'What is twice as cold as zero?'
- Equivalent Temperatures, Different Scales [05/28/2003]
The inhabitants of Xenor use two scales for measuring temperature. On
the A scale water freezes at O degrees and boils at 80 degrees; on
the B scale water freezes at -20 degrees and boils at 120 degrees.
What is the equivalent on the A scale of a temperature of 29 degrees
on the B scale?
- Kelvin Scale [08/20/2002]
I need to know about the kelvin scale, and how to convert from kelvin
- Minus Temperatures, Minutes Before [12/07/2012]
A student gets confused by the rate of change of temperature that dips below zero
Celsius, as measured before a certain time. After graphing the time and data points,
Doctor Ian makes an analogy to a more familiar rate of change.
- Origins of Celsius and Fahrenheit [03/31/2002]
Who invented Celsius and Fahrenheit?
- The Origins of Fahrenheit [09/16/1998]
Why did Fahrenheit decide to make 32 degrees his freezing point and 212
degrees his boiling point?
- Origins of the Fahrenheit Scale [11/20/1998]
Why did Fahrenheit choose 32 as the freezing point of water? Where did he
get his scale?
- Spaces and the Number Line [02/26/2003]
If you say, 'How many degrees are there between -2 and 4?' would you
count the 0 degrees and answer 7 degrees or would you not count the
nought and answer 6 degrees?
- Temperature Difference [05/20/1999]
Can 44 degrees Centigrade equal 80 degrees Fahrenheit when you are
talking temperature difference?
- Twice as Cold as Zero [04/28/1999]
What is the temperature if it's twice as cold (or warm) as zero degrees?
- Where did Fahrenheit and Celsius Come From? [07/26/1997]
How did scientists figure out the relation between two numbers that mean
the same thing, e.g. 0 deg C and 32 deg F?
- Zero Point of Thermometer [04/06/2002]
What is the zero point of a thermometer? Is it 0 degrees of any
temperature scale, or 0 Kelvin, or -273.15 Kelvin?
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