It's winter, and usually that means snow. Perhaps you have even gotten a snow day (or two). Here are some questions to help you pass the time while you are indoors.
1. One of the words used to describe snowflakes is hexagonal. What does hexagonal mean?
2. Around 1885, Wilson Alwyn Bentley tried to find identical snowflakes using what method?
A. He captured thousands of them on a black board and examined them under a magnifying glass.
B. He photographed thousands of them under a microscope.
C. He collected thousands of them on stainless steel pans and stored them in giant freezers.
D. He created thousands of this own snowflakes in a very cold laboratory.
3. Snowflakes are formed from water and ice, which are clear. So why do they appear white?
A. The crystal surfaces of the snowflake scatter and reflect the light hitting the flake in a way that makes our eyes see white.
B. Snowflakes are formed in white clouds.
C. Dust and pollen in the clouds turns them white.
D. They freeze in a way that turns them white.
4. Snow crystals come in many shapes: needles, hollow columns, bullets, irregular and the delicate, lacy six-sided snowflake that most often comes to mind when we hear the word "snowflake." Each of these shapes are created under different conditions and temperatures. The lacy snowflakes are created during which temperature range?
A. 32º to F 21º F
B. 21º F to 14º F
C. 14º F to -8º F
D. -8º F or colder
5. Identical snow crystals were discovered in 1988. What shape were they?
B. Hollow columns
D. Six-sided flakes