Showing posts with label geology. Show all posts
Showing posts with label geology. Show all posts

Tuesday, September 19, 2023

Crystals


I always love learning about crystals! It's so fascinating to watch them grow. We didn't make hot ice this time, sadly, because that's one of the best things to do. But we grew sugar crystals and left them in the solution for a lot longer than we've had the patience to before. So we got some nice big crystals.
They are so pretty!
We grew borax crystals too
Here we were attempting stalactites with epsom salts, but got more like…cave popcorn?


Still, lots of growth!
These are salt crystals (ideas for growing them here)
I love seeing the tiny cubes they make
And the pretty fern-like patterns!
We still have a lot of unbroken geodes from our last , so we broke one to see what crystals we could find inside!
The girls were very patient and didn't just smash the thing as we've done sometimes in the past, and it was worth it because it ended up splitting neatly in two:
like this!
Beautiful!
I love the group of big crystals within the matrix of tiny ones in this half of the geode!

Thursday, August 31, 2023

Cave Unit Study and Activities

We started the school year off learning about Caves because I wanted something I knew would be engaging for Ziggy. There are some really fun field trips to go with caves and I just thought he would love the geology! And he did!
This unit lasted until Halloween so we got to do some fun Halloween tie-ins with bats also. Our previous Cave Unit can be found here (this went along with a trip to New Mexico and Carlsbad Caverns! I wish we could go there again!).

Some miscellaneous resources:


Cool movie about The Deepest Cave

A short film about Carlsbad Caverns

Interesting film: Inside Hidden Caves

We also watched a good video called "Hidden Forests" which I can't find right now.

There's a Planet Earth section on Caves: (Season 1 Episode 4)

I've always been fascinated by this giant crystal cave. They've learned a lot more about it since I first learned about it ten years ago in our first cave unit!


We learned about the Lascaux caves and other prehistoric cave art and did these "cave paintings" on paper bags. (Something like this.) We used chalk and crayons, and even burned the ends of some skewers so we could use "charcoal" like the ancient people did.
Gus and Clementine joined in too
Clementine (she looks so young here!) was very pleased with herself
Big kindergarten boy

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This was a little activity on dissolution when we were talking about how stalactites and stalagmites are formed. Ideas here:

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This was a fun activity (idea from here)—we put a soluble mineral (sugar cubes) under an insoluble mineral (clay) and dripped water through a small hole in the clay. The sugar dissolved in the water, leaving cavities underneath the clay.
We could see how some caves form in the sides of cliffs, and other areas form sinkholes beneath the ground level
Lots of little caverns here—I wish I could shrink myself and go in exploring!

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Best of all were the multitude of drawings of spelunkers Ziggy did during this unit! We watched some movies about cave divers and cave explorers and his imagination was really caught by that. He drew his poor little explorers squeezing through so many tight and winding caverns! (They didn't mind, though, because they were so prepared with lanterns, ropes, hooks, and so forth! And because they got to see so many wonders!)

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For our culminating activity of this unit, we decorated our trunk (for the ward Trunk or Treat) like a cave! We made stalactites and stalagmites, and hung bats from the ceiling. It looked cute, and we were rather proud of it…but then we saw a bunch of other amazing trunks other people had decorated and realized it was not quite as impressive as we'd thought. :) But we had fun making it all the same!

Monday, September 23, 2019

Volcano Activities

We learned about volcanoes (briefly) and did the usual activities. Of course, my kids love volcanoes—who doesn't? We didn't go as in-depth as we sometimes have, but we covered all the basic types of volcanoes and how they are formed. (Above you see a cinder cone…made by blowing sugar into the air with a straw and letting it settle into a cone shape).

My very favorite thing was going to see this IMAX movie about volcanoes. If you ever get a chance to see it, make sure you take the chance! It was so cool! You feel like you are IN a volcano, or walking around one—which I have always wanted to do. And this wasn't even dangerous. :)
Vinegar and baking soda volcano
Rice crispie stratovolcano—alternating layers of cinders and pahoehoe lava (rice crispie mix) and liquid a'a lava (melted chocolate chips).
This must have been a very explosive eruption!
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