Winter Ice Unit Study

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Our January Kiwi Crate unit was all about ice!

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There are so many ideas and activities included in these crates that we don’t ever get around to doing them all.

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We usually start by doing the 2 or 3 activities that have supplies included in the kit.

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First up was an activity using salt and food coloring to make colorful icy-looking snow-crystals.

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They turned out pretty cute.

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Next was a sink or float experiment.

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We set some little mini figure guys into a few of the slots in the flexible green ice cube tray that was included and then filled all of the slots with water.  Then we froze it…

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A few days later, we filled two cups with water…one with cold water and one with hot water.

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And we put a frozen fishy toy in each one.

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(Hot water on the left, cold water on the right.)

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And we watched to see which one would melt first.  The boys predicted the hot water fish cube would melt first, of course.

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and they were right!

Then we got carried away going through some of the extension activities in the little booklet.

We learned a lot about the ways in which salt and ice react together.

First up was a little experiment called salt tunnels…

 

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We sprinkled salt over the ice and then dripped food coloring over it.

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The salt makes the ice melt more quickly, so those spots formed little tunnels in the ice, which were made visible with the food coloring.

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Next up was seeing how the salt makes the ice stick to things…

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Then we did a sink or float experiment where we placed a two pieces of carrot into two different cups…one with fresh water and one with salt water.  The carrot floated in the salt water, but it sunk in the fresh water.

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The next experiment took it a step further and showed how fresh water can even float in salt water.

We put ice cubes into both cups…the salty one and the fresh one.  After a minute of letting the ice melt we added food coloring to both.

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The red melted ice water stayed on top of the salt water cup, but filled up the entire fresh water cup.

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We had a fun time learning about ice!

 

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