Temperature: Do You Want That in Celsius or Fahrenheit? (page 2)
How can you tell the temperature? Without a thermometer, you have to rely on how you feel and how your body responds to the conditions. Sweating suggests that the temperature is high; shivering indicates cool temperatures. A thermometer makes it possible for you to accurately read the temperature. Two temperature scales are commonly used: Fahrenheit and Celsius. In this activity you will take readings from both types of thermometers.
- Celsius thermometer
- Fahrenheit thermometer
- Beaker of ice water
- Beaker of very warm (but not scalding) water
- Place both thermometers on a table. After thirty seconds, read the thermometers. When you read a thermometer, your eyes should be level with the top of the fluid in the thermometer. Record the temperature on each thermometer.
- Place both thermometers in the cup of ice water. After one minute, read the thermometers. Record the temperatures.
- Place both thermometers in the cup of hot water. After one minute, read the thermometers. Record the temperatures.
- What is the purpose of a thermometer?
- On which thermometer is the boiling point 100° and the freezing point 0°?
- Why would the following individuals need to be able to read a thermometer: farmers, auto mechanics, cooks, and nurses?
- To determine temperature.
- Answers will vary.
If you know the temperature in degrees Fahrenheit, you can convert it to Celsius with this formula:
- Celsius = 5/9 (F - 32)
The reverse is also true. To change from Celsius to Fahrenheit, use this formula:
- Fahrenheit = 9/5C + 32
Use the first formula to convert 70°F to Celsius. Use the second formula to change 30°C to Fahrenheit.
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