Journal Entry

Working Hard in Fairbanks

Learning to Journal and Document Science

It's Day 3 at the PolarTREC Orientation and Share Fair in Fairbanks, Alaska. What are we doing? Well, in addition to learning fascinating polar science, a large part of the training is learning to be effective science communicators. This will be our role while out on our individual science expeditions.

I have been issued a MacBook with software for writing, editing and loading journal entries to the PolarTREC website along with a camera for photo and video documentation. We are busy learning and practicing the mechanics of how to do this and making our first entries. We haven't mastered photo and video documentation yet, so for now the entries are only text with links. I even have homework! The assignment is to make another journal entry so here goes.

Now It's Your Turn!

A cool phenomenon in very cold weather (it is currently -29) is that when you throw hot water into the air it turns into tiny ice crystals before hitting the ground and looks like a little snow cloud. As fun as this is to watch, the perplexing thing is that if you try it with cold water nothing happens. The cold water just falls to the ground in the same way that it went up. I made a video of this and it is super cool! I will post the video in a subsequent journal (we have to learn how to do this first), but in the meantime, be thinking about why this happens to hot water and not cold. If you have an idea, go ahead and post it in the comments section. You can do this now or wait for the video. If you are one of my students I'll even give you a little bit of extra credit! Note to my students (hint, hint)- think about the changes of state we learned. There are two changes of state involved with this process. Good luck!

Note to my students and anyone else posting comments- For my students, enter your first name and last initial and I'll know who you are, of course, unless you are one of the Trevors (better use the first two letters of your last name then). Anyone else, you can call yourself whatever you want!

Look at this icicle!I'm in Fairbanks checking out this very large interesting icicle. Ice sculptureThe Museum of the North welcomes visitors with this beautiful ice sculpture.

Comments

Guest

Hot water is closer to evaporating than the cold water. When you throw the water out of the cup, you increase the surface area, which aids evaporation. It also helps the process of evaporation that the air is cold and dry. Hot water, increased surface area, cold and dry air are factors that help the water evaporate before it hits the ground.Kaitlin Mears

Peggy McNeal

Hi Kaitlin! You got it! And it's actually the evaporated water that forms the snow. As soon as it evaporates it immediately condenses and falls as snow. That's why the particles are so tiny. Isn't that neat?

Guest

I was wondering what did they do to train you to be an effective science communicator?

why this happens to hot water and not cold is because hot water is closer to evaporating and cold water is not.

and the two states of matter are solid and liquid in the snow cloud.

Carol Scott

Hi Peggy, welcome to Fairbanks! You are doing a good job of engaging your students (and all readers) with this journal entry - way to go!

Peggy McNeal

Great question about the training. Basically, when I go out with my research team, I'm going to be the one telling the public about the science. So I already do that with you guys in my class right? But to reach a larger audience, a lot of it will be through this website and "webinars" which are live events that you can watch and talk with me online while I'm in Svalbard. Some of the training was technical- how to use the programs, software and computers. We also worked on journaling (writing the blogs), learned how to speak and reach out to groups and lots of logistical stuff, like checking out cold weather gear for kids to try on, etc.
The hot water is closer to evaporating. So, remember from class that it has more energy and the particles are moving faster. They easily transition to the vapor phase. But it is so cold that they condense out right away and fall as snow. So there are two changes of state involved: evaporation and condensation and actually THREE different states. The water in the cup is a liquid. When it evaporates it is a gas and then it condenses out into tiny ice crystals (actually, I guess technically this is deposition) which are solid.
Good job!

Alex Eilers

Hi Peggy!

Awesome pic of the ice sculpture at the Museum of the North! Enjoy orientation!

Alex Eilers
PolarTREC Teacher - 2012 and 2014

Peggy McNeal

We were lucky and were there at the perfect time with the sun illuminating the sculpture from behind. It was beautiful!