A time interval is the duration between two specific points in time. It can be measured in various units, such as seconds, minutes, hours, days, or years. Time intervals help us understand the length of events, schedules, and timelines, making it easier to plan and organize activities. In mathematics and science, time intervals are often used to analyze changes and movements. For example, in physics, the time interval between two events can help calculate speed or acceleration. Understanding time intervals is essential in fields like project management, sports, and music, where timing plays a crucial role.