Unearned Revenue is Short term Liability Or Long term ?

it depends on the period at which we will provide the service , when the services will be provided in less than1 year unearned Revenue will be Current Liabilities but when the services will be provided in more than1 year unearned Revenue will be Noncurrent Liabilities

but usually unearned Revenues considered Current Liabilities 

answer is very simple

It is a short term Liability 

its short term liability not a long term

current liability .........

Unearned Revenue is normally a "Current Liability".

Unearned revenue normally appears in books of newspaper publishers, entertainment companies, telecommunication operators etc. because the nature of their business is such that cash is received before services are provided.

Unearned revenue is future obligation so its a Long term liability