Quantitative observation means that your description of what you observed
includes a definite number that you measured.
For example:
"I saw a really big guy." is not a quantitative observation.
"I saw a guy who is 8 feet tall." is a quantitative observation.
Acceleration has units of speed / time. The standard SI-unit is meter/second/second, usually written as meter/second2. Other units of distance/time/time can also be used, but it is convenient (for equations) to use a set of consistent units.
It is the same 1 second we have on Earth.
A quantitative description is a purley numerical description. A qualitative description is a purely narrative description.
Just about any cubic characteristic: cubic millimeter, mile, yard, foot, parsec, etc.
That is a unit of length - 1/100 of a meter.
magnetsism
They use a universal system of units.
Density of an object is defined as (mass)/(volume).
1g = 100cg
6g x 100cg/g = 600cg
Qualitative
A cloth tape measure.
Chemical properties
Kilograms
This property is flammability.
Height is measured in
Density is defined by dividing mass by volume; that's also how it is usually calculated.
A thermometer is used to measure the temperature of hot water.
Centi- (apex learning)
It is the Celsius temperature scale
Qualitative
measuring tape