Question

4. In which units will you express the length of your compass box?



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Answer 1

Answer:

A unit of measurement is a quantity used as a standard to expressed a physical quantity. The following are the basic quantities being measured and the respective units used:

1. Length

Length – describes how long something is. Distance, height, thickness, and depth also use the same units.

Some of the common units are as follows:

• millimeter (mm) – a metric unit commonly used to express the length of very small objects like keys, and thickness of small objects like notebook.

• centimeter (cm) – a metric unit commonly used to express the length of small objects. It is also used in measuring the height of a person.

• inch (in) – an English unit commonly used to express the length of small objects such as boxes and bottles.

• foot (ft) – an English unit equivalent to 12 inches. It is commonly used to express short distances, and height of all objects like trees and buildings.

Ruler

A ruler is a common instrument used for measuring the length of small objects. It usually has four units of measurement to choose from: millimeter, centimeter, inch, and foot.

Meterstick

A meterstick is an instrument for measuring short distances.

For short distances, the metric unit meter (m) and the English unit yard (yd) are commonly used.

For long distances, the metric unit kilometer (km) and the English unit mile (mi) are commonly used.

Answer 2

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• Centimetres