This document discusses adjusting entries made at the end of an accounting period. There are four main types of adjusting entries: 1) converting assets to expenses, such as depreciating the cost of long-term assets over time; 2) accruing unpaid expenses that have been incurred but not yet paid; 3) converting liabilities to revenue by recognizing revenue over time for transactions like prepaid rent or ticket sales; and 4) accruing uncollected revenue, such as interest earned but not received. The purpose of adjusting entries is to ensure revenues and expenses are recorded in the appropriate period in accordance with accrual accounting.