|
|
Our Report |
|
We chose to do Snowflakes for our Science Fair Project this year. We wanted to do this project to see if there was any different types of snow. We looked on the internet and read a few books to figure out our question. We found out that there was 8 main types of snowflakes. They are Steller Dendrites, Sectored Plates, Hollow Columns, Needles, Spatial Dendrites, Capped Columns, Rimed Crystals, and Irregular Crystals.
“Dendrites” means tree-like. Steller Dendrites have six main branches and randomly placed side branches. These crystals are sometimes 5 mm or more in diameter, but they are still quite flat and less than 0.1 mm thick. Spatial Dendrites are from other individual ice crystals that get stuck together. Each branch is one arm of the Steller Crystal. These flakes are formed at 10-3'F.
Sectored Plates have ice ridges that seem to divide the plate-like arms. These Sectored Plates are flat, they are silvers of ice that fall to the earth in a stunning diversity of complex shapes. These are formed at 14-10'F.
Hollow Columns are columnar crystals that are sometimes the main reason for snow falls. They are hexagonal, with conical hollow features on the end. Capped Columns start out growing on their own, then they switch. Plate-growth. This happens when crystals are blown in to a region with a different temperature. Needles are columnar crystals that are so long and thin that they look like needles. These needles sometimes ma contain thin hollow regions, and sometimes the ends break into needles branches. Hollow Columns are formed at 21-14'F and Needles are formed at 25-21'F.
Rimed crystals grows in clouds, and clouds are made of little rain droplets. These droplets freeze on to a falling snow crystal and this is called a rime. Sometimes a snowflake may just be a ball of rime, then which it is called soft hail. Irregular Crystals are snowflakes that land on the ground broken, ill-formed and in bad shape. Warm snowfalls bring the irregular snowflakes, especially when wind is blowing hard.
A snowflake is crystal, so we have pointed out. The crystal is when all the molecules(1) inside are lined up in a specific order which is called crystal lattice. The molecules in ice form a hexagonal lattice. The type of snow that falls depends on the temperature.
We also found out many intersecting facts about snow:
-That the Inuit people can recognize and name at least 80 different types of snow.
-The largest snowflake ever recorded was 15 inches in diameter.
-In some place in Canada, like P.E.I, the snow is pink in some areas because the soil is red.
-Fresh snow is good insulator.
-Snow kills hundreds of people in the United States each year.
We hope you enjoy reading about our project.
a group of atoms chemically bonded together