Three experiments with an egg. Entertaining physical experiments at home

ENTERTAINING EXPERIENCES AT HOME
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Three experiments with an egg. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

In the first experiment, we will try to measure the volume of the egg. To do this, you first need to make a measuring device - a glass graduated in cubic centimeters.

Glue with water-insoluble glue from thick drawing paper a measure - a box measuring 2x2x2,5 centimeters. Its internal volume should be 10 cubic centimeters. Of course, not everyone has special glue. Then you can stick plasticine around this box, except for the upper edge, and then take out a paper measure. You will get a mold with a capacity of approximately 10,1 cubic centimeters.

To a thin-walled tea glass, glue a vertical paper strip on the outside (preferably from graph paper). On it you will apply divisions every 10 cubic centimeters of water poured with a manufactured measure.

When the glass with divisions is ready, let's start measuring the volume of the egg. Pour water up to the middle of the glass and write down at what division its level is. Dip a fresh egg into the water. It will sink and the water in the glass will rise. Write down at what division the water level will be now. Subtract the original level from the value of this level - and you will get the volume of the egg in cubic centimeters.

Three experiments with an egg

In a similar way, you can measure the volume of various irregularly shaped objects, unless, of course, such an object deteriorates from immersion in water.

The second experience is the equalization of the densities of the egg and water. Take a jar, fill it with water and drop the egg into it. The specific gravity of a fresh egg is greater than that of water, so it sinks. Start gradually pouring salt into the water and mixing the solution well, and after a while you will notice that the egg is no longer so confidently lying at the bottom of the jar, that it oscillates more when the solution is mixed, and after a while it will generally float to the surface.

Three experiments with an egg

In order to equalize the specific gravity of the egg and the solution, pour a little clean water into the jar. Continue pouring and stirring the solution until the egg, placed in the middle of the jar, between the bottom and the surface, sets in place.

Let's proceed to the third experiment - the dissolution of the egg shell. Put a well-washed egg in an empty glass and fill it with vinegar. The shell of the egg, which is made of carbonic lime, will begin to dissolve. In about a day, it will dissolve completely. Now the contents of the egg are in a thin elastic shell. Carefully drain the vinegar and rinse the egg under running water. After standing in water for two days, the egg will increase in volume. Through its thin, porous film, water easily penetrates the inside of the egg, while the protein and yolk cannot pass out.

Measure the volume of the egg again by very carefully lowering it into the graduated beaker. You will find out by what amount the volume has changed.

Three experiments with an egg

By the way, the experience did not spoil the egg. It has become a little sour, but it is quite suitable for scrambled eggs.

Author: Rabiza F.V.

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Maxim Integrated has announced a new series of miniature nanoPower devices. The MAX17220 - MAX17225 is a family of ultra-low current draw synchronous DC-DC boost converters.

Modern gadgets, wearable electronics, mobile devices and Internet of Things (IoT) devices are increasing their functionality at an accelerated pace. And at the same time, they are placing ever higher demands on power supply systems. The biggest challenge in the industry today is to maximize the life of a portable device from a single battery. The MAX17220-17225 nanoPower family is ideal for applications where battery life is critical.

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Maximum input current limit - 0,5A (typ.);
Input voltage range 0,4-5,5V (after startup);
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Backup power supply circuits on ionistors.

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