Friday, September 16, 2016

Beetles, Flies, and True Bugs

Lesson 12 in Apologia's Exploring Creation with Zoology 1: Flying Creatures of the Fifth Day is all about "Beetles, Flies, and True Bugs."  Here are a few things we did to supplement this study.
We watched the "Meet the Beetles" episode on The Cat in the Hat Knows a Lot About That! Bugs and Beyond DVD, about beetle defenses.
 You can watch the same at https://www.youtube.com/watch?v=jMvqpS4isaE (seen below).
We just love the Cat in the Hat science videos.  We found another for this study, the "Water Walkers" episode (about water striders) at this link, starting at minute 13:00: http://www.dailymotion.com/video/x1yhs2j_amazing-eyes-water-walkers_lifestyle.
We also watched some real footage of water walkers at https://www.youtube.com/watch?v=V-cXzZt2iVk (seen below).  (You can see where the water almost bends under its feet.)
At the text's suggestion, we did a simple experiment to better understand how a water strider walks on water.  To do this, we used a dish of water, a small piece of a toilet paper square, and a needle.
We love experimenting!
First, we placed the piece of paper carefully on top of the water, then quickly rested the needle on top of the paper.
Immediately, the paper absorbed the water and sank, but the needle floated!  Since it is made of steel, it should sink, but it didn't!  Why not?  "It is held up by the water's surface tension, which is like a thin 'skin' on the surface of the water.  If an object doesn't exert a lot of pressure on the surface of the water, this 'skin' will hold it up, keeping it from sinking."  Neat!  As soon as we touched the needle and broke the "skin," the needle sank.  Cool stuff!  Now we better understand how the water strider stays afloat!
I just love how sweet some of these notebooking activities are!  I had to snap a picture of her beetle minibook,
We also read Fireflies by Ann Heinrichs ...
 ... and watched the "Night Lights" episode on this The Cat in the Hat Knows a Lot About That! Surprise, Little Guys! DVD.
You can watch it at https://www.youtube.com/watch?v=bF5wn4pJ_6U (shown below).
Happy studying!

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