III. Answer the following questions.
1. What is measurement?
2. Which units of length give different measurements for different people? Why?
3. Why do we use standard units to measure things?
4. What is capacity? What are the units used to measure capacity?
5. Write three units to measure time.
Measurement
Answers
Explanation:
1.Measurement is the numerical quantification of the attributes of an object or event, which can be used to compare with other objects or events. The scope and application of measurement are dependent on the context and discipline.
2.Hand span and cubit are not used as standard units of length because their sizes vary from person to person. So, two different persons may give different measurements for the same length, which is not desirable for a standard unit.
3.We need standard unit for measurement to make our judgement more reliable and accurate. ... Thus there should be uniformity in measurement. For the sake of uniformity we need a common set of units of measurement, which are called standard units. Nowadays Si units in science and technology almost universally.
4.Capacity is the amount a container can hold. The oil, juice drink and gasoline containers are just a few examples of objects that illustrate capacity. Capacity is measured in the SI base unit called litres (L). The most common units for capacity are litre (L) and millilitre (mL).
5.The SI system, also called the metric system, is used around the world. There are seven basic units in the SI system: the meter (m), the kilogram (kg), the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd).