Our Snowflake Patterns Christmas Tree Ornament
is 4½ inches across. The Gold Ornament and Red Christmas Ornaments snowflake decorations are made of durable hard plastic covered in iridescent are a soft gold color with iridescent glitter accents. The Christmas tree ornament has a 3-D snowflake design that consists of three layers of multiple points. The snowflake design on these Unique Christmas Ornaments are the same on both sides of the plastic Christmas ornaments. The snowflake patterns Christmas tree ornament hangs from a gold cord.
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Information on Snow.
Almost everyone in the colder parts of the world know the shimmering ice crystals called snow. Snow is formed when the water vapor I clouds is turned into moisture at a temperature below freezing, 32 degrees F. If the temperature is above freezing, rain falls instead of snow. Snow does not always reach the earth in its original from. Sometimes the ice crystals are partly melted and reach the ground as sleet. Sometimes they are entirely melted ad fall as rain.
Snow forms crystals which always have six rays, but the designs are always different. No two snowflakes have ever been found to be exactly alike. Large snowflakes are combinations of these crystal fragments and have been know to measure four inches in diameter. Collecting some flakes, on a black surface and examining them under a magnifying glass may show the elaborate designs in snowflakes. Wilson A. Bentley made photographs of more than 6,000 snow and ice crystals at his home in Jericho, Vermont.
The white color of most snow is due to the reflection of light by the tiny surfaces of the crystals. Red snow and green snow have been known to fall in Greenland and a few other arctic regions. They get the red and green color from tiny living things in the snow. Snow is often colored black by dust particles.
There are millions of people in the world who have never seen snow, since it never falls on more than a third of the earth’s surface. There are parts of the southern United States where snow has never fallen. Select this link to view our German Ornaments.
How Snow Forms.
Snow crystals usually start from tiny droplets of super cooled water. Water droplets do not always freeze at the normal freezing temperature of water, 32 degrees F. Droplets of super cooled water remain liquid even though their temperature is below the freezing point.
At the beginning of the process of snow formation, some super cooled droplets freeze. They do so because they contain or come into contact with tiny particles called freezing nuclei or ice nuclei. Most freezing nuclei are dust or specks of plant debris raised by the wind.
Nearby, water droplets, which are still super cooled, slowly evaporate. Much of the resulting vapor joins the crystals and so the crystals grow.
The crystals fall faster and faster as they grow. They may collide with one another to make snowflakes. Snow particles fall at rates ranging from nearly zero for tiny crystals to about 3 feet per second for a typical snowflake and several times that for melting snow. Snow crystals often strike super cooled droplets, which immediately freeze onto them. This process, called riming, forms soft particles known as snow pellets or graupel. In temperate zones, the melting of snow pellets provides much of the rainfall from cumulus clouds.
Nearly all snow crystals have six sides, but they vary in shape. The crystals are six sided because the water molecules within them link together in six sided structures. Planar or flat crystals called plates range from simple hexagons to six pointed stars to the familiar finely branched dendrites. Dendrites form at a temperature of about 5 degrees F, six sided columns form at about 14 degrees F. Many columnar crystals are hollow.
Individual snowfalls usually contain many different types and combinations of crystals. Snow crystals that encounter a variety of temperatures and humidity’s as they grow may become partly planar and partly columnar. They may or may not undergo riming or clumping.
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