At the end of every school year we end our life science curriculum with geologic time. It's one of my favorite units because I get to bust out my fossil collection (If you know me, that's a big deal).
It's hard to talk about geologic time, mass extinctions, and evolution of species without bringing up climate change. All these topics are fascinating but there aren't a ton of hands on labs you can do with them. I decided to try something different this year and make my own ice cores for students to analyze. Most students had never heard of ice cores, and when I asked them how we learn about shifts in climate I got a lot of blank stares. It was a great opportunity to bring up a new topic.
Some background on ice cores:
Materials you will need:
Some troubleshooting tips:
Overall the students enjoyed looking at their simulated ice cores and I was glad I got to throw in an extra lab during our geologic time unit. If you are interested in checking out the powerpoint and lab worksheet I used for this lesson, click here. If you would like to look at additional ice core information and dig through real data, check out this site. Have fun!