Week 6: Geologic Time - Science Methods II (Addy Junge)

 Addy Junge

Week 6: Geologic Time

1. What did you do in lab today?​

  • During lab, we first covered and reviewed topics that were going to be on the exam. We took this time to ask questions and talk about any confusion we had. We also took our class formative assessment regarding the course itself. Switching gears to our new unit, geological time, our class discussed how a presidential election was influenced by a 100-million-year-old coastline. I thought this was really interesting, considering I have never heard about something like that before! For our activity, we predicted moments on a timeline for when we think they happened. After that, we sat down as a class, discussed our answers, and started discovering if our predictions were right. My peers and I explored the website EarthViewer and wrote down significant moments in history to add to our timeline. 
2. What was the big question?​
  • I would say the big question during our lab would be "How does Earth's geological history impact us today, and what were those significant moments?
3. What did you learn in Thursday’s discussion?​
  • We had our exam! :)
4. Read the online textbook, chapter 1:
  1. What did you learn?​
    • We talked about Snowball Earth during our lab section, but we did not talk about the reason behind why scientists think that. I thought it was interesting to learn that the evidence for Snowball Earth comes from sedimentary rocks. Along with that, I also learned a little more about the timeline of Earth's History, starting from 4.5 billion years ago all the way up to 100 million years ago. It was cool to look at the timeline and see what happened so long ago. It was also nice to see if my predictions from the prior lab activity were accurate. 
  2. What was most helpful?​
    • The visuals are always helpful, but specifically the stop clock image. This helped me recognize how much has actually happened before humans walked the earth. It made me recognize that so much time has passed, and there is so much more!
  3. What do you need more information on?​
    • I think I need more information on the names of the eras and time periods. I also think I need a little more clarification on what a positive feedback loop is (I'm not quite understanding the mechanism). 
5. What questions, concerns, and/or comments do you have?
  • This may be a silly question, but what are the differences between a time period and an era? Also, why are some time periods inside an era (or vice versa)?

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