Question

Match the following items. Match the items in the left column to the items in the right column.

1.precision

2.milli-

3.graduated cylinder

4.± value

5.centi-

6.kilo-

7.accuracy

8.balance
-----
1/1,000

uncertainty value of measurement

1,000

instrument to measure volume

degree of exactness of a measurement

instrument to measure mass

correctness of a measurement

1/100

Answer 1

1. Precision - Correctness of a measurement

2. Mili - 1/1000

3. Graduated cylinder - Instrument to measure volume

4. +- Value - Uncertainty value of measurement

5. Centi - 1/100

6. Kilo - 1000

7. Accuracy - Degree of exactness of a measurement

8. Balance - Instrument to measure mass

Answer 2

Answer is:

1. precision - degree of exactness of a measurement.

Precision is a description of random errors, a measure of statistical variability.

2. milli - 1/1000.

For example, millimeter (abbreviated: mm, a thousandth part of metar) is an unit of distance in the metric system.

3. graduated cylinder - instrument to measure volume.

Cylinder use cubic millimeter (symbol: mm³) volume measurement unit (takes up space).

4. +- value - uncertainty value of measurement.

5. centi - 1/100.

For example, 1 cg = 0.01 g ; one centigram is equal to 10⁻² grams.

6. kilo - 1000.

For example, kilogram (symbol: kg) is the base unit of mass in the International System of Units. 1 kg = 1000 g.

7. accuracy - correctness of a measurement.

Accuracy is the closeness of a measurement to the true value.

8. balance - instrument to measure mass.

Balance is an instrument for comparing the mass of two bodies.