The motor oil in a car's engine will accumulate dirt over time, and it is recommended that the oil in a car's

motor be changed regularly. Car mechanics use an instrument called a hydrometer to determine if the oil

needs to be changed. Explain the steps in using a hydrometer and how a hydrometer uses specific gravity to

test the motor oil for dirt.

BI y

(600)

Explanation:

A hydrometer is an instrument that is mainly used to measure the specific gravity. It works on the Archimedes principle

It measures the relative density liquid that is ratio of density of liquid to that of water.

To perform the test, the car mechanic would take the oil in some graduated cylinder and then hydrometer is lowered into the oil till it floats freely. The point at which the oil touches the stem of the hydrometer is noted. Now oils specific gravity would be more incase of more dirt and this is the benchmark of oil replacement

It measures the relative density of that

explanation:

wow this is going to be a long one

cats shouldn't be kept inside their whole life they should be out in nature in the fresh air but because of our technology advances it has become unsafe for our furry friend to be outside in the city's, because they could be hit by vehicles. in city's yes i agree being inside isn't the worse thing, but if you live somewhere rural you should let your cats outside, yes some animals hunt cats but i don't think cats should be kept inside confined to such a small space.

btw this is my opinion