Anna made her way up the slippery slope, Kristoff, Sven, and Olaf following closely behind. Kristoff came up beside her and was about to offer to take the lead when Olaf jumped in front of the both of them.
"Hey," Olaf interjected loudly, "Why are you guys shaking like that? Are you guys doing some sort of unknown dance move?" Kristoff and Anna just shook their heads and kept on walking. They exchanged a look, as if each was waiting for the other to give the explination.
Finally, Kristoff turned to him, "Olaf, the shaking thing we are doing is called shivering. It's what humans do when we're cold. It's part of our process called homeostasis. It's the way we keep alive, and don't freeze to death." The completely blank look on Olaf's face was quickly remedied by Anna's quick thinking.
"It's just a way we keep our bodies warm without having actual heat. It feels like it's well below freezing." Both Kristoff and Anna watched Olaf as his face remained blank.
"Okay!" Olaf cheered as he made his way in front of the pair, skipping through the snow.
"Kristoff," Anna said timidly, not knowing if this was a good subject to talk about, "you sounded like you really knew what you were talking about with the shivering thing."
"I actually do know what I'm talking about, Anna" Kristoff said with sarcasm seeping through the genuine element, "My 'love expert' friends explained a lot more than love to me. They knew I was interested in ice since I was a kid, so they explained things about ice and water to me."
"That's interesting," Anna commented feebly, "do you want to tell me more about it?"
Kristoff paused, as if to check whether the statement was genuine or not. He decided the question was one of true intentions, and that it was worth giving her an answer. "Well you know that ice is made of water, right?" Anna's cynic expression told Kristoff that of course she knew that simple and common fact. "Okay. Well water is polar, which means that the pieces that make up water itself have different charges, in other words, the ends pull against each other."
Anna's nod instructed him to keep going. "When the water freezes this pull causes the ice itself to form pointed edges."
"Oh, you mean like the edges on the snowflakes!" Anna pepped up and seemed like she was starting to grasp the concepts that Kristoff was throwing at her. He smiled at this small revelation.
"Yeah, like that. The air around the ice has a temperature that is temperamental and the air that is closest to the ice freezes in another pointed fashion, mimicking the original ice crystal."
"So that's why snowflakes have the different shapes, and they all have pointed edges."
Kristoff's heart warmed at her understanding, remembering how not that long ago he was learning the same things for the first time. "Sounds like you got this, Anna."
At that moment, they came upon the largest structure of ice either one had ever seen, and they knew their journey had just begun.