Week 27

Monday & Tuesday, March 16 & 17, 2020: Last week we learned all about our inner animals.  Our study of evolution continues online this week with a dive into Charles Dawin and the Voyage of the Beagle.  To begin, watch the HHMI Biointeractive video below:

Next, you will follow in Darwin’s footsteps as he explored the Galapagos Islands.  Using the Explore the Galapagos feature on the PBS NOVA website, you will take a tour of where Darwin went and what he observed.  You will document your work by creating a Google Doc (title: Name – Week 27) and sharing the doc with Mr. Swart.  Copy the questions below into your doc and then answer them all in complete sentences:

  1. Where are the Galapagos Islands?
  2. First click on “Explore the Islands” and read about three of the islands.  Summarize one observation for each of the three islands you read about.
  3. Look at “Darwin’s Finches”.  What do you think it means by unique niche, based on what the rest of the paragraph says?
  4. How are the beaks different and why was that important?
  5. Now click on “What Darwin Saw”.  You will be going through his various stages and reading about what Darwin said (if you have headphones you can listen to the interviews as well).  Summarize Darwin’s first impressions (just writing the opening sentence will get you zero credit, click for the full story).
  6. What surprised Darwin on the islands?
  7. What did the tortoises offer the local people?  How did it benefit Darwin?
  8. At first Darwin thought the birds were unrelated, but what ideas eventually came from his observations of the finches?
  9. What was the fallout (or result) of Darwin’s journey?
  10. Go back to the “Explore the Islands”.  Look at some of the interpretative panoramics and the animals.  Pick one (or two for a bonus point) animals and summarize their unique characteristics.

Wednesday & Thursday, March 18 & 19, 2020: We continue our investigation into the history of biological research by moving past Charles Darwin and learning about the work of Carolus Linneaus, the father of modern taxonomy.  To help place the concept of taxonomy into historical perspective, review the individuals listed below and briefly summarize their major accomplishments into your Google Doc.  For reference, a link to a previous lesson about Watson & Crick’s discovery of the structure of DNA is also included, as are links to the texts by Darwin and Linneaus.

Next, complete the Biological Classification POGIL and email Mr. Swart with any questions.  Options for showing your work include:

  • Print your own copy, fill it out, and then email Mr. Swart with pictures of your completed work
  • Write answers to the POGIL questions in your Week 27 Google Doc into a new section titled “Biological Classification POGIL Answers”.

Keep Learning!

Students who would like additional learning about taxonomy are encouraged to watch the Crash Course video below:

Friday, March 20, 2020: Congratulations on completing your first week of distance learning in Biology!  For our Friday lesson, sit back and enjoy Jack Horner’s entertaining TED Talk in which he describes his research connecting dinosaurs and chickens.

After the video, open your Week 27 Google Doc add definitions for the terms embryology, the fossil recordatavisms, and behavior.  Include an example of each from Dr. Horner’s talk.  Double-check your Week 27 Google Doc is shared with Mr. Swart, then have a great weekend!

Combustion Lab

Class began with a reminder that all work from lessons 70-73 (chapter 13) must be turned in at the start of class on Monday morning for full credit.

For our work today, we reviewed the combustion of propane and balanced the equation, then carried out an experiment in which a candle (made of paraffin wax, another hydrocarbon) is combusted under a bell jar.  We timed how long the candle burned for, and also measured the amount of oxygen and carbon dioxide in the room (before combustion) and under the bell jar (after the candle extinguished).

Next, we wrote the chemical equations for combining hydrogen peroxide and bleach (producing oxygen) and for combining baking soda and vinegar (producing carbon dioxide).  We evaluated the effect of combustion in the presence of excess oxygen or carbon dioxide, measuring how long the candle burned as our endpoint.