A stopwatch is a timing device used to measure the amount of time it takes for an event or action to occur. It has start, stop, and reset buttons.
Stopwatch cheat sheet for homework
Timer: Similar to a stopwatch, it measures time but may not have all the same features such as start/stop buttons.
Chronometer: A highly accurate stopwatch used for precise timing in scientific experiments or sports events.
Split Time: The time recorded by pressing the split button on a stopwatch while keeping the overall timer running.