The science questions of youngstersalso let you know what hen air technology is like and what happens to fireplace whilst shutting down.
The summary is made by means of artificial intelligence and checked through man.
Children’s technological know-how problems consist of post -swimming fatigue. Liisa Kuula, an academy researcher in psychology, explains that swimming requires constant body manage and stress your muscle tissue.
Post -swimming fatigue is also due to modifications in frame temperature.
The 2d query is about how the birds circulate both up and forward.
Emeritus Professor Emeritus of Animal Physiology Esa Hohtola compares the bird’s flight to the propeller plane.
Why do you constantly get worn-out after swimming? Even in case you move swimming within the morning, you get worn-out after that.
Elma Aidanpää, 10
Body Take in many ways to suggestions when to sleep. The maximum essential recommendations are the time spent on wakeful and the method of the accustomed bedtime. Lightness, body temperature, meals rhythm, temper and stage of exercising also have an effect on.
Bathing causes at least a change inside the temperature of the body and burden the frame, that could cause a feeling of fatigue, even supposing it’s far simplest morning.
When swimming, the entire body is within the water, wherein the body temperature adjustments right away. If the water is truely colder than the body, the frame must begin to produce warmth quickly, which can produce a specific experience of fatigue.
Being inside the water additionally calls for constant reaction and frame control. If you mumble nicely within the water nicely and for a long term, all your muscle tissues paintings plenty and get plenty worn-out. It also makes the adventure to the feather islands.
Moving inside the water is very one-of-a-kind from being on dry land. Post -pressure rest is critical for all organisms for recuperation.
Liisa Kuula
Academy of Psychology
University of Helsinki and University of Oulu
The vicinity of the water regions is ready one 10th of the area of Finland. Picture of Långträsk Nature Reserve in Siuntio. Picture: Kimmo Taskinen / HS
Why is there a great deal greater water in Finland than in many other countries?
Oiva Summanen, nine
In many There are more or less as a great deal water inside the countries as in Finland, however it is particularly hidden underground as groundwater. In Finland, there is additionally a large amount of water inside the form of lakes and ponds.
We have as many as 187,888 lakes and ponds to include water regions of more than 500 square meters. The total area of the water areas is pretty carefully one 10th of the whole place of Finland. Only Canada has big regions which have an same share of the united states of america protected with water.
The big quantity of lakes and ponds in Finland and Canada is because of their similar climate situations and the history of the Earth. In each countries, it rains quite a number of water over the yr. In addition, the climate is cool so that the water does not evaporate very a great deal into the air. There are not many lakes and ponds in dry and warm nations.
In many other nations, however, it is rainy and cool and nevertheless do not have many water regions. Indeed, in Finland and Canada, their bedrock is ancient and damaged.
In both nations, there had been several ice a while in the beyond, all through which up to many kilometers thick continental glacier moved slowly and dug a big number of different sizes on the surface of a damaged rock. At the end of the Ice Age, those thousands of big and small wells have been packed with water as lakes and ponds.
Arto Luttinen
Geological Superintendent
Natural History Museum
The wings of the mouse wings are approximately a hundred and ten-one hundred thirty centimeters. Picture: Kimmo Taskinen / HS
What reasons the bird to move forward, not simply upwards whilst the chicken blurs wings?
Ilmari Plant, 6
So The hen remains in the air and movements ahead, it must flow the air down and backwards. The fluttering of the chicken wings on an everyday journey flight is not only a down-down motion, however in particular the guidelines of the wings make a scurry movement that actions the air back.
In addition, the attitude of the hand brackets as the wings are hit down with out movement: the front edge of the last side is then lower than the rear area. At the same time, the strain distinction among the upper and decrease floor of the wing causes a downward air spin.
The end result is, ultimately, a lively airflow on the returned of the fowl. It keeps the fowl inside the air and actions forward.
To simplify the bird’s flight, you could evaluate the propeller plane. The tip of the bird’s wing is as if the airplane propeller tasks, and the elbow next to the subsequent to the plane does the system’s wing mission.
That Hohtola
Professor of Emeritus of Animal Physiology
Oulu University
When the candle flame turns off, a small smoking dough stays for a moment. Picture: Markku hidden
Where did it cross whilst it is became off?
Eino Kuivalahti, three
Tulen can flip off by way of stifling with an object or blanket. A small fireplace, along with a candle flame, also can be grew to become off by means of blowing.
The fireplace is going out, ie disappears when it now not receives meals. I fire meals is with out oxygen and substance that burns, together with the wax while burning a candle. In addition, the hearth desires a sufficiently excessive temperature to preserve combustion.
So the fireplace doesn’t actually go anywhere whilst it goes out, but it best stops being – a bit just like the play ends while all the gamers go domestic.
For example, while the candle is grew to become off, there’s a small smoking dough. It consists of small partially burned carbon particles and vaporized stearin or paraffin that has now not been ignited.
Tom Kuusela
college researcher
Turku University
Children’s technology questions have a brand new e mail deal with. Send the question, the full call and age of the questioner to kids.Tietymsyms@hs.Fi. The column is supplied via Touko Kauppinen.
