Define the si units for length mass time and temperature

For this case we have the following measures in the international system:

For the length:

It is a unit that is used to measure the length of any object: Meter.

For the mass:

The mass in the international system is denoted by: kilogram. It is used to have an approximate idea of the weight of objects.

For the time:

The measure in the international system is: Seconds. It is used to know how much time elapses in an event to be studied.

For the temperature:

The measure in the international system is: Kelvin. It is used to get an idea of how cold or hot an object, process, place, person can be.

Answer:

Length: meter

Mass: Kilogram

Time: Second

Temperature: Kelvin