Book 3, Question 80 · Video
Why Do Clocks Keep Time?
A clock counts equal little ticks and adds them up into seconds, minutes, and hours. Steady ticks make trustworthy time. That is why a good clock never gets bored of counting!
Read the full answer →What Crafty Clover says in this video
Intro
Hey there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do clocks keep time?
The Big Idea
A clock counts equal little ticks and adds them up into seconds, minutes, and hours. Old clocks use a swinging pendulum or a spring wheel. Many modern clocks use a quartz crystal that buzzes 32,768 times every second! Steady ticks make trustworthy time. That is why a good clock never gets bored of counting! Phones and ovens hide clocks too, so they always know when.
Pick a Beat
Step one: pick a beat. A pendulum, a spring, or a quartz crystal repeats the same motion again and again. The steadier the beat, the better the clock!
Count the Beats
Step two: count the beats. Gears or a tiny chip tally each repeat. Enough beats add up to one official second!
Move the Hands
Step three: move the hands. The count moves the pointers or the numbers forward, one step at a time. And some clocks sync to a time signal, so they never drift!
A Closer Look
Let's take a closer look at a clock! The face shows the numbers. The hands point to the time. A quartz crystal keeps the beat. And a battery gives it power!
Quick Facts
Quick facts! A day is one spin of the Earth. Clocks slice that spin into 86,400 seconds. Quartz watches can stay right for months without help. Leap seconds are rare extra ticks that help clocks match Earth's slightly uneven spin. And phone clocks check satellites or the internet to stay lined up with the world!
Think Like a Scientist
Now, think like a scientist! Be a clock. Count one-Mississippi for 60 seconds while a grown-up watches a phone timer. How close were you? Try it again. Your body is a rough clock!
Outro
Clocks show us that counting steady ticks can tell time all around the world. From tiny watches to giant tower clocks, it all starts with a beat. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!