Question

Why is using a graduated cylinder more accurate than using a beaker?

Answer 1

see below

Explanation:

using a beaker you donn't know exactly the volume you use because the superficial area is wideand a little variation of height can mean a great difference in the volume you have. Than the sign of capacity on the beaker is put only approximately
The graduated cylinder, having a less superficial area have a less difference in volum also if you a little mistake in filling the instrument, then generally a misure is more accurate

Answer 2

Well, graduated cylinders have more markings, and are thus designed to be more accurate...

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Examine this graduated cylinder. It has markings every `"1 mL"`, so you can make measurements to the 1st decimal place as the uncertain digit.

Hence, it is reasonable to assume you have measured, say, `"52.5 mL"`.

On the other hand, examine a beaker:

The markings are only every `"20 mL"`... and it even says "approx." on the `"100 mL"` volume! You couldn't possibly say you measured `"52.5 mL"` on it, and you'd not exactly be sure you got `"50 mL"`... your guess would be at the ones place, and you might say `"55 mL"`.

And if you had both in hand, you might measure `"52.5 mL"` in the graduated cylinder and pour it into the beaker, only to find it is a significantly different volume.