Capacity: The capacity of a vessel/container is the quantity of liquid or matter it can hold.
- This jug contains some amount of water.
- The glass is fully filled with water.
- We can easily guess that the jug contains more water than the glass.
- That is because the jug is larger than the glass.
- Jug is the biggest vessel so it contains more amount of water than other vessels.
- Cup is the smallest vessel so it contains least amount of water than other vessel.
- Glass will contain amount of water more than cup and less than jug.
- Height of the vessels is same but first vessel is narrow and second one is broad.
- So, capacity of the first vessel is lesser than the second vessel.
Non-standard units of the capacity
- During ancient times, people used to measure capacity of a vessel by another vessel.
Example : There was traditional wooden measuring pot by which people measure the weight of the grains.
But everyone has different shape and size of pot. So, this pot was a non-standard unit of capacity.
Suppose a bucket full filled with 9 mugs of water.
A bucket contains 9 mugs of water.
But if we take bigger mug, bucket will full fill with 6 mugs.
A bucket contains 6 mugs of water.
So, here mug is the non-standard unit of the capacity of bucket.
When we make a tea we use approximate measure of the sugar. For example, some use 2 spoons of sugar, some use 1 spoon of sugar, etc.
Shape and size of the spoon can vary. So, spoon is also non-standard unit of capacity.