And hot glue around the edges of the straw to secure them in place.Ĥ. Cut the straw in half and place them through the holes with one long and one short facing each side. Find a drill bit to match the width of your straw and drill two holes through the two caps.ģ. Using a hot glue gun, glue the tops of the two lids together.Ģ. Empty the water bottles and keep the lids.My kids were amazed that this was even possible since they are so used to the digital era. It’s so fun to create something that measures time without technology. It is pretty cool! The water clock works like an hourglass with the water passing back and forth between the two bottles at a constant rate. The water clock design we created is made out of water bottles. You can still use them to measure time today! They calibrated the water clocks with a sundial for accuracy to measure the passage of time over longer periods, such as days and nights. The water poured into the second bowl.Īs time went on water clocks became more advanced with gears and water wheels, eventually leading to the invention of mechanical clocks.
They used to make water clocks with bowls filled with water that had a hole at the bottom and was placed on a ledge above another bowl. We made a homemade water clock this week and I am going to show you how I did it. It is one of the oldest ways to measure the passing of time from the ancient world of the Egyptians, Greeks and Romans! Time is measured by the flow of water from one container to the other. Time for some fun water-themed science! Have you ever heard of a water clock?Ī water clock was an ancient way to tell time with natural elements, similar to an hourglass or a sundial.
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