Today’s Wonder of the Day was inspired by Jacob. Jacob Wonders, “How do watches work?” Thanks for WONDERing with us, Jacob!
Some kids might rely upon the many clocks that adorn the walls of classrooms and hallways throughout the school. Others might use a smartphone as their timekeeper. Still others may have already adopted the time-honored tradition of wearing a watch (pun totally intended!).
If you wear a watch, how did you get it? Was it a birthday gift or a Christmas present? Or did you get to pick it out for yourself.
For example, you may have noticed that some watches have moving hands, just like many wall clocks you're familiar with. Other watches might feature only digital numbers that tell the time. What's the difference between these types of watches? And is one more accurate than the other?
Analog watches are those watches that have rotating hands that indicate the time. They travel at different speeds. The second hand moves the fastest, completing a circle in exactly 60 seconds. The minute hand moves a little slower, completing a circle in exactly 60 minutes. The hour hand travels the slowest, completing a circle every 12 hours.
Around the watch face of an analog watch, the time intervals may be marked with Roman numerals, numbers, or even simple lines of different lengths. Telling the time on an analog watch is done in the same way you learned to tell time on wall clocks way back in your early years.
Not all analog watches have all three of the aforementioned rotating hands. Some might have only minute and hour hands. Analog watches can feature all sorts of intricate designs, including glow-in-the-dark hands!
Digital watches, on the other hand, feature an electronic digital display to tell the time rather than a series of hands pointing to numbers. Digital watches can display the time in hours, minutes, and seconds. Digital watch technology has evolved to feature many other types of information beyond simply the time. Some of this information can include a calculator, a thermometer, a compass, and more.
The most advanced digital watches also include Global Positioning System (GPS) receivers to keep track of where the watch (and its wearer) is at all times. Some digital watches will also allow users to transfer information to and from a computer, so that they can be used to monitor exercise routines.
Digital watches are much more about function. They are usually made with more durable materials, such as plastic or rubber. As a result, they're often cheaper even if they feature a wider variety of special functions.
Standards: CCRA.L.3, CCRA.L.6, CCRA.R.1, CCRA.R.2, CCRA.R.4, CCRA.R.10, CCRA.SL.1