Question

Match each SI unit to the quantity it measures.

1) meter - length
2) pound - mass
3) second - time
4) foot - length
5) minute - time
6) kilogram - mass

Answer 1

The SI units for length, mass, and time are meter, kilogram, and second, respectively. Pound and foot are part of the English units system, and minute is time-based but not an SI base unit.

Step-by-step explanation:

To match each SI unit to the quantity it measures:

1. Meter (m) - length
2. Kilogram (kg) - mass
3. Second (s) - time

It should be noted that the pound and foot are part of the English units system and not SI units. The pound is a unit of weight (force) in the English system but can also refer to mass, and the foot is an English unit of length. Likewise, the minute is a commonly used unit of time, but it is not an SI base unit; however, it is based on the SI unit of second (1 minute = 60 seconds).

Let's apply this information to match the units with their corresponding quantities:

1. The meter measures length.
2. The kilogram measures mass.
3. The second measures time.
4. The foot, while not an SI unit, also measures length within the English system.
5. The minute, although not an SI base unit, represents time and can be derived from the SI base unit of seconds.
6. The pound, which is primarily a unit of weight in the English system, can also denote mass informally. In the context of SI units, the kilogram would be used instead of the pound for mass.

Therefore, in a listing only counting SI units, the correct pairs would be: 1) meter - length, 3) second - time, and 6) kilogram - mass.