Options:
A. estimating temperature to the nearest tenth of a degree
B. estimating the mass of the sample to the nearest tenth of a gram
C. estimating the thickness of the foam cups
D. the position of the cups of sand and water under the heat lamp
E. the brand of light bulb used for the heat lamp
F. the air temperature outside the lab
Answer:
A. estimating temperature to the nearest tenth of a degree
B. estimating the mass of the sample to the nearest tenth of a gram
D. the position of the cups of sand and water under the heat lamp
Explanation:
An error is defined as a measure of the estimated difference between the observed or calculated value of a quantity and its true value.
The reason for the error is as follows:
- Lack of concentration
- Miscalculation
- Instrumental errors
- Measurement errors.
According to the question, these are the following option which are sources of errors.
- Estimating temperature to the nearest tenth of a degree
- Estimating the mass of the sample to the nearest tenth of a gram
- The position of the cups of sand and water under the heat lamp
At the time of the experiment, the exact figure of the temperature is required.
An Error in an experiment is the amount of deviation from the Ideal value recorded in an experiment and some sources of experimental errors include; estimation of values, instruments being used, and errors due to human activity.
Hence, the correct option is A, B, and D