What is Snow?

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ビデオで話している英語内容!who’s up for a word game when I say science what picture comes into your mind is it stuff like test tubes and telescopes maybe it’s computers or microscopes or living things like flowers or frogs what did you think of anything that looks like art a lot of science is really beautiful and there might be no better way to study the beauty of nature than by looking at snowflakes have you ever taken a close look at snowflakes in the winter when they land on your kotor mitten just before they melt
each snowflake is a six-pointed work of art as cool and as individual as the ones you’ve probably made with paper and scissors but how does nature make snowflakes first thing to know is the little six pointed pieces of ice that you and I called snowflakes are really made up of snow crystals scientists use the word snowflake to describe the fluffy white things that falls in the sky which are actually bunches of snow crystals all stuck together and the journey of a snow crystal begins in a cloud up there water in the form of gas called water vapour freezes around a
piece of dust or pollen that’s just floating around in the cloud this forms what’s called a seed crystal and seed crystals can become snow crystals if conditions inside the cloud are just right as the seed crystal bumps around inside the cloud lots of particles that make up water stick to it the particles that make up water have a very specific shape they kind of look like the letter V and when enough of these particles stick together they form shapes that have six sides called hexagons and that’s your most basic kind of snow crystal but if there’s enough
water around then more water particles will attach at the little points of that six-sided crystal each becoming an arm or a branch from there all kinds of different things can happen even though all snowflakes have six sides they can end up looking totally different from one another in fact scientists have names for more than 30 different shapes of snow crystals some are big and flat and are called plates others look long and narrow called needles still others are tall and wide like columns and then there’s probably
the most famous shape called dendrites they look kind of like stars that have sprouted tree branches the shape that each snow crystal takes depends on what the conditions were like as it formed in the cloud things like temperature and how much water is in the air can make a big difference if you’re a snowflake so for example colder temperatures often makes Lakes with more pointy and fancy arms while snow crystals that are made in warmer temperatures and air with less water in it tend to be smaller and simpler now you might have heard that no two
snowflakes are alike a lot of them do look really similar to each other but scientists think that it would be really hard for any two to end up being exactly the same that’s because the conditions in the clouds are always changing so the flakes that they make are always changing too once a snowflake takes shape its journey has only just begun after bouncing around in the cloud for a while it falls to the ground and as it falls it keeps changing depending on the temperature the amount of water in the air and other things like winds that it passes through since each flake takes a
different path all the way to the ground each one ends up being slightly different and that’s why scientists say that no two snowflakes are exactly the same but they’re all really interesting and beautiful so now you know how snow crystals are made by Nature miniature works of art no scissors required thanks for joining us on scishow kids and if you have a question or just something you like to learn more about let us know by leaving a comment below or emailing us at kids at the scishow comm and we’ll see you next time

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