whats the importance of hemispheres?

Answer 1

to split the world into geographical sections for use when locating a point on Earth. Which is also why there are degree marks.

Answer 2

The importance of them, is to divide the world into their certain section. It would make it easier to locate places that you do not know the location of. Such as, if someone wanted to know where Indonesia was, you could tell them which hemisphere it was on, and they will 99.9% of the time, find it much faster if they know the hemispheres.

Answer 3

Well, the southern and northern hemisphere are in opposite seasons. For example, it's almost fall in the northern hemisphere right now and it's almost spring in the southern hemisphere.

Answer 4

If you didn't know which one you wer in, you wouldn't know to look for the Southern Cross or Polaris.

...It's just a way of dividing up the planet so it is easier to discuss. It's like the reason for taxonomic classification, or colours on boxes.
We're talking about "that plant, y'know, it's all green, except when the stem turns red; it's got white flowers, and maybe toxic fruit, but you can cook the greens before they're toxic too..." OR We're talking about "Phytolacca americana."

This weather pattern only occurs near this island chain, 'know it's over by that big island that's also a continent and country...

Answer 5

The importance goes more to man's predilection to catalog and categorize and label things. East and west are arbitrary. North and south are divided by the equator, which may have some importance as far as weather patterns, ancient exploration etc.