Procedure Thermometer 1. Obtain a thermometer in the lab. CAUTION: Handle a ther

Question

Procedure Thermometer 1. Obtain a thermometer in the lab. CAUTION: Handle a thermometer with care. If it breaks, notify your instructor immediately 2. Determine the range of the temperatures that can be measured with your thermometer by examining the scale imprinted along the barrel of the thermometer. 3. Measure the following temperatures: Room temperature . Cold tap water . Hot tap water Inside refrigerator Questions 1. What are some potential sources of error in your measurements? 2. One centimeter equals how many millimeters? 3. How many micrograms are in 1 gram? 4. Human body temperature is 98 F. What temperature is this on the Celsius scale?

Explanation / Answer

2) According to British Standards, well-maintained liquid-in-glass thermometers are able to manage a measurement uncertainty of ±0.01 °C in the range 0 to 100 °C.

3) Room temperature: 20°C (It can vary)

Cold tap water temperature: Around 7°C

Hot tap water temperature: Approximately 50°C

Inside refrigerator: 1.6° C (it also depends on the zone of the refrigerator)

1) The potential source of error:

A) The instrument: Limitations in digital processing and physical issues

B) Sensor: The sensor is normally the greatest source of error in the reading.

C) Measurement error: It depends on the skill of the operators, and what they try to measure. Wrong device can produce a false reading.

2) One centimetre equals to ten millimetres.

3) 1000000 micrograms are in 1 gram.

4) It is 36.66°C on the Celsius scale.

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