How to make a water clock, how to make a water clock for elementary school students

Find an incense stick and measure its length with a ruler first. After five minutes of ignition, measure its length; After five minutes, measure again. After measuring it a few times, you will find that:

In the absence of wind, the burning rate of incense is essentially unchanged. Depending on the rate of combustion obtained by the experiment, for example, if 1 centimeter is burned every five minutes, a scale can be engraved every 1 centimeter on the same incense. In this way, it becomes a "ruler" to measure time.

Just look at the length of time the incense has been burned to know how much time has passed.

Using the flow of water, it is also possible to calculate time.

Find an empty wine bottle, fill it with water, and do a handstand to let the water out. Do it several times, and the time for the water to run out is always constant; The first time it takes a few seconds, and the second time it's a few seconds.

Why can flowing water and burning incense be used as a "ruler" to measure time? Because the flow of water and the burning of incense are both a kind of movement, time and movement have a close relationship, and it is only through movement that the elapsed time can be expressed. Therefore, measuring time is inseparable from movement.

Before there was no clock, the ancients were using water and fire to keep time, according to ancient records, more than 2,000 years ago, there was a kind of drip water timing "carving", also called the water clock.

In ancient times, there was a kind of carved leakage, which was mainly composed of several copper kettles, also known as "leaky pots". Except for the bottommost one, each pot has a small eye at the bottom. The water dripped from the highest pot through the lower pots to the lowest pots, dripping finely and evenly.

In the lowest pot there is a bronze man, holding a wooden arrow that can float, and when there is more water in the pot, the wooden arrow floats, and according to the scale on it, you can know the time.

Combustion timers also have a long history. In ancient China, there was a kind of "fire alarm clock": put the incense in a boat-shaped trough, and at a certain point of the incense, tie two copper bells with a thin thread, and hang it horizontally on the small "dragon boat" where the incense is released.

The incense is lit from one end, burned to the place where the thin thread is tied and the thread is burned, and the two brass bells fall on the metal plate below, and when people hear the sound, they know that the predetermined time has come.

Nowadays, people still use "fire bells": the various fuses that cause explosives are fire bells, and the time from ignition to ** is determined by the length of the fuse.

The sun rises in the east and sets in the west, telling us that the earth is constantly turning. It is also a relatively stable exercise. Since ancient times, people have also used this movement to measure time.

People made the sundial guǐ, a "sun clock" that uses the movement of the sun's shadow to indicate the time. However, on cloudy days and nights,"Sun Clock"It doesn't work.

Find an empty bottle and split it in two. Place the bottle upside down on the other half. Poke a small hole in the cap, a small dot. Timing with a stopwatch.

The bottle and infusion tube used for water infusion in the hospital can be made into a water clock, adjust the water speed, and write the scale on the bottle.

Elementary school students need to prepare tools for making water clocks: plastic bottles, scissors, water, paper, pens. Divided into 5 steps, the following is the detailed operation of making a water clock:

Steps.

Cut open plastic bottles.

Clean the outer packaging of the plastic bottle and cut the plastic bottle in half.

Hole in the cap. > poke a hole in the cap with scissors.

Irrigation <>

Plug the hole in the lid with your hand and fill with water.

Docking <>

Put the section with the lid into the section without the lid.

Complete <>

How to make a small water clock:

Use a plastic gun to coat the lids of two mineral water bottles with molten plastic, then glue the two bottles seamlessly, cool and fix them, remove the bonded caps of mineral water bottles, punch holes with a drill, punch two holes similar to the size of straws, cut the straws into two long and short sections with scissors, stuff the two straws into two small holes respectively, one end is long and the other end is short, and use a plastic gun to seal the gaps between the holes on both sides.

Add water to a mineral water bottle, drip in the pigment, close the lid, and then screw on another mineral water bottle, the hourglass water clock is completed, the first timing test begins, it is found that a bottle of water is leaking, the speed is too fast, fill the straw with a thin rubber tube, reduce the size of the drip hole, time the second time, and draw the water level line on the water bottle every second with a marker pen until the leakage is finished. Draw the scale, mark the time, and use the same timekeeping method to mark the other bottle with the scale and time. This is the end of the simple water clock timer.

The water clock is made as follows:

Materials: Two plastic bottles of the same size, tape, markers, thumbtacks, utility knives, water, funnel, timer, kettle.

1. Use a utility knife to cut off the top from the bottle 1 3, the cut top can be garbage**, and this part is not needed later.

2. Turn bottle A over and use a pushpin to pass through the center of the bottom of the bottle to form a small hole.

3. Put the bottom of bottle A on the top of bottle B. Affix a note to the body of bottle B, the distance from the bottom of bottle B to the bottom of bottle A or slightly below the bottom of bottle A.

4. Now prepare the timer and kettle. Pour water into the neck of bottle A with a funnel (bottles should be nested) and start the timer immediately. Pour on the filling line of bottle A.

5. When a minute has passed, use a marker pen to make a small mark at the water mark on the slip of paper on the B bottle. Continue labeling for minutes until the water is completely drained from the top bottle to the bottom bottle. We only mark the finger liquid for the first 10 minutes, but you can mark as many minutes as you want.

Tools are required: plastic bottles, scissors, water, paper, pens.

Divided into 5 steps, the following is the detailed operation of making a water clock:

1. Cut open the plastic bottle, clean the outer packaging of the plastic bottle, and cut the plastic bottle into half.

2. Open the hole in the bottle cap and poke a hole in the bottle cap with scissors.

3. Fill the water, plug the hole in the lid with your hands, and then fill the water.

4. Docking, put a section with a lid into a section without a lid.

5. Finish, draw a scale on the bottle body.

Do you know what people used to keep time in ancient times?

In ancient times, because there were no modern bells. Water meters and other accurate timing instruments, therefore, smart ancient people began to use their brains.

In ancient times, people first used the method of looking at the sun to keep time, and the sun rose and the sun set. Use "days" as a unit of time. Then he invented a timekeeping instrument called the sundial, which was accurate enough to use a quarter of an hour as a unit of time according to the shadow of the sundial and the shadow that appeared on the sundial needle.

Then there's today's "highlight" - the water clock. However, water clocks are also divided into water-receiving water clocks and water-draining water clocks. Today, I'm going to teach you how to make a simple drain water clock.

Making a drain type water clock can be divided into the following steps:

Step 1: Prepare the materials: utility knife, I-nails, stopwatch, plastic bottle (2 pieces), scissors, marker, double-sided tape, paper, tape.

Step 2: Cut open the water bottle. Measure the first bottle from the bottom of the water bottle to about 15 cm, and the second bottle from the top to the bottom about 15 cm, and cut them all. (The water bottle is a mineral water bottle with a height of about 20 cm purchased in a general supermarket.)

Step 3: Unscrew the cap off the water bottle and make a small hole of 2 3 mm with a screw (if the hole is too large, the flow rate is too fast. The hole is small, and the flow rate is too slow)

Step 4: Fill the large half of the bottle with the cap with water and plug the small hole with your hands. Mark the scale "0" on the highest part of the water surface, and then mark the numbers down one by one according to different times.

Step 5: Put the two bottles together, tape them together, let go of your fingers, and the water will start to flow down.

Step 6: (and the last step), mark the scale, when the water starts to flow, press the timer (stopwatch), count to one minute, mark the scale at the place on the surface of the water, until 10 minutes.

Such a simple drain type water clock is made.

How to make a small water clock:

Use a plastic gun to coat the lids of two mineral water bottles with molten plastic, then glue the two bottles seamlessly, cool and fix them, remove the caps of the bonded mineral water bottles, punch holes with a drill, punch two holes similar to the size of a straw, cut the straw into two sections with scissors, stuff the two straws into two small holes respectively, one end is long and the other end is short, and use a plastic gun to seal the gaps between the holes on both sides.

Add water to a mineral water bottle, drip in the pigment, close the lid, and then screw on another mineral water bottle, the hourglass water clock is completed, the first timing test begins, and it is found that a bottle of water is leaking, the speed is too fast, fill the straw with a thin rubber tube, reduce the size of the drip hole, the second timer, and use a marker pen to draw the water level line on the water bottle every second until the leakage is finished. Draw the scale, mark the time, and then use the same timekeeping method to mark another bottle with the engraving and time. This is the end of the simple water clock timer.