She understands friction. She understands humidity and the effects.
I need a better understanding of what makes the different hydrocarbons, well different, and why one works better than another based on temperature (primarily). In other words, why is a harder wax better for colder temperatures? Is it simply durability? Is the chemical composition different?
Also, how does the wax composition relate to snow crystals being sharp or rounded and it this just a question of structure?
I plan to talk to her about additives like moly and how these relate to impurities, and I understand cold weather and the relationship with static but why is there static at cold weather...is it a humidity issue?
To sum it up...
How do I explain to a nine year old how hydrocarbons are different and why this relates to temperature?
Where does the static in cold situations come from?
Does snow crystal sharpness determine wax choice and why?
We already created a cool diagram with a stick figure skier going down a hill and labeled it with gravity, mass, friction, drag...kind of the why wax at all.
I have raced for years and we all wax because we know what works and when...but when a nine year old asks why on top of why...as in "why do you wax with the expensive stuff when it is warm outside"...and I say, because there is a lot of humidity in the snow...and she replies, "but why does that wax work better when the snow is more humid?" That's when I say...lets get some ice cream!!! But now it is school and a different story.