Show & Tell {Fossils}

I'm going to do double duty with my Show & Tell again this week - earlier this week we checked on the "fossils" that we made and I got some pictures. 

One of our Science lessons was about how rocks/minerals "replace" the tissues of dead plants and animals to make fossils.  We did a fun experiment to see how this happens.  We took some sponges and cut them in "bone" shapes, then poured an epsom salt solution (with food coloring!) over them.

I realized after taking this picture that we had WAAAAAAAAAY too much liquid in our "bone" dish, so I poured some out.  Otherwise, we would have been waiting "billions of years" for these fossils.  LOL  Anyway, after several days, the liquid had evaporated, leaving behind salt crystals, which had also begun to form in and around the sponges.  The kids were able to observe that they were not "soft and squishy" any more, but felt "crusty" and rather brittle.

 

So there you have it, yet another fun and educational Show & Tell brought to you by my favorite Science books.    And hopefully as we get back to more of a routine here (now that DH is going back to work after the surgery) maybe my Show & Tells won't be quite so lame.  LOL

 

Show & Tell is hosted by Mary aka CanadaGirl - I'm headed over there now to check out the other Show & Tells that I haven't seen yet today.  Come on over!