The difference between ascending and descending intervals?

[macias]

Hello,

Sorry for the lame question, but I thought it is all about common sense, for example ascending -- c, d, e.. , desceding -- e, d, c.

Now I am at lesson 2, which is suppose to be descending intervals and I get (from EarMaster) such samples: f, g (on the staff).

So -- what is means "desceding interval" in context, that EM shows such pair (f,g) at staff. If my common sense is Ok, shouldn't be (g,f)?

I am not saying a word about what I hear because I learn and I cannot be fully reliable here.

Cheers,