August
12
17:05
Children // Psychology and development

How to explain to children why the birds fly

If the answer to the question of a child causes you difficulty, with a look or read a book on a topic of interest, this will cause the child's interest to further study anything.

watching the wildlife, the child often wondered why birds fly and not fall, why can not people fly?I wonder how to explain to children why the birds fly?Well, if you have a good encyclopedia of the living world, or birds that a child could answer his question clearly showing illustrations and pictures.Come to the choice of books seriously and carefully.To familiarize the child with the world pick up books with well drawn figures and bright illustrations.

There are more than 9800 species of birds and almost all of them, except for some, can fly.First of all, tell the child about the devices for the flight, which are available for birds.Almost all birds have wings.Wings of a bird is not a flat surface and curved nature specially arranged so that the wing has created force opposing another force - the force of gravity.This means

that the air flow surrounding the wing must pass a long way over the upper part of the wing than on the bottom.Since the lower part of the wing is concave, the airflow over the wing will move faster than under it.This creates a different pressure over the wing and under it, thus creating a force directed upwards, which counteracts the force of gravity.Next adaptation for flight - the wings.Pen - This horny skin formations, very light and airy.

Through feathers, the bird's body surface is smooth and easy in-flight air flows around it.Also, using bird feathers can control and change the direction of flight.Feathers easily retain heat, creating a layer that protects the bird from environmental hazards, from cold, damp, wind and heat.In addition, the flying bird can mean structural features of the skeleton.The bones in the skeleton of birds are fused with each other, making it very tough.If the mammalian skeleton spine bone consist of individual vertebrae, forming a chain, in the skeleton of a bird are firmly fused to each other.The bones of birds are thin and porous, whereby the skeleton of birds is very light.When a bird inhales air quickly passes through the bronchioles in the lungs and from there to the air sacs.Breathing air returning from the lungs air sacs where gas exchange re-formed.This double breathing supplies the body with oxygen, which is very important during the flight.The bird has a big heart, and this allows blood to circulate more quickly in the blood vessels of a bird.The high content of red blood cells allows more birds to carry the oxygen that is needed during the flight.The heart of poultry is reduced with a frequency of 1000 strokes per minute, moreover, the birds high pressure of about 180 mm.Hg.Art.To compare the pressure of 100-120 people total.Thanks to well-developed respiratory and circulatory systems, the bird has a high body temperature and rapid metabolism.To get more energy, consumes a lot of bird food, explain to your child why it is important to feed birds in winter, when natural food becomes scarce, and her search difficult.Even in the nervous system of birds has powerful cerebellum, responsible for the coordination that is needed during the flight.

But not all birds fly.For example, the penguins.It is the only bird that is not able to fly, but the ability to swim.They live primarily in the water and the wings become like fins through which they float.The largest bird in the world, too, can not fly.This ostrich to fly it too heavy.

needed huge wings to take to the air with a body mass.In general, the bird can fly, if the weight of her body no more than 20kg.Some birds flee before the flight, such as the Great Bustard and chickens.Tell the children about the birds-champions.For example, mountain goose is able to fly through the mountains of the Himalayas at an altitude of 10 kilometers, these birds are seen, even on the highest mountain in the world - Mount Everest.The winner of the high-flying vulture became Ryuppelya once he encountered with the aircraft at an altitude of 11271 meters.Arctic Tern able to cover a distance of 40,000 kilometers at one end, and a lifetime flies, 2, 5 million kilometers.Bird-survivor - Sulphur-crested cockatoo.The duration of his life is over 80 years.The child will be interested to know that the birds have their holiday - on 1 April.On this day, the International Day of birds.It was the beginning of April the birds begin to return to their wintering places.Explain to the children that the birds that fly in the cold seasons in warmer climes, know and remember the direction in which they want to fly, moreover, they are able to choose the best route.If the wind is favorable, the birds fly very high, where the wind blows harder.And if the wind counter, birds tend to fly low, using trees and large buildings like the wind slab.Joint walk with a child - a good opportunity to observe the child and to expand knowledge about the world, in fact, watching the child himself may find the answer and explanation of many things of interest to him.

Answering the questions of children, do not try to make them complete and exhaustive.Responses should be, first of all, concise, clear and accessible, contain a definite answer.Explain to children using simple clear words to him.Let your child's prompt response to new observations and thoughts, their answers on bringing him tact and sensitivity.The issues concern the child with respect, do not try to "go" on the answer, because contact with the child on a variety of topics, explaining the things he can not understand it develops curiosity and outlook of children.