Can assets become expenses over time?

Certain assets (like equipment or goodwill) can depreciated or amortized over time. Other assets (like land) are not amortized. An asset that is available to be depreciated can be expensed over time according to the associated depreciation schedule for that particular asset class. Often, a journal entry is made at the end of each year. The journal entry would reflect a credit to an asset account and a debit to an expense account.