Unit 3: Geological Time 2020
The Fossil Record & Life's History - Week of May 11th
Task 1 - Please watch the Crash Course Video on Earth Science
Optional - watch Earth: A History at any time over the next 2 weeks. It's a visually impressive account of how life on Earth came to be. It's 1.5 hours, so I'm not formally assigning it, but it's worth a watch if you have time. |
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Task 2 - Please complete the Getting Into the Fossil record web investigation. Post your answers to the questions on Page 3 of your ePortfolio.
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Check it out! Giant Penguin fossils in the news! Click here and here
The Canadian nodosaur! National Geographic |
Task 3: Please watch The Geological Timescale video below
Task 4: The picture to the right is a great representation of the video. Does the visual of the clock help you to understand the magnitude of time differences between each event?
Take a look at the 3 yellow pictures at the far right. Can you think of 3 different explanations as to what might have happened there? |
Task 5: Complete the Life Has a History web activity. Post your answers to the questions on Unit 3 of your ePortfolio.
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Relative Dating - Week of May 19
Task 1: Warm up with taking a look at the following Word document titled "Relative Moon". Order each event directly onto the document (1 being the oldest). Consider, why did you order the events that way? What clues did you use?
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Task 3: Please watch the 2 videos below on Laws of Relative Rock Dating. See if you can use that information to order the dates of rocks in the above 2 photos. Note that we always older rocks from oldest to youngest. What rock layers are the oldest? What's next? How do you know? (use the laws from the videos to help).
Task 4: Read through this webpage. Next, test your knowledge here by ordering rock layers. Note that the site will auto grade your response if you click "grade sequence". Fun right? Try another one.
Optional activity: Challenge your skills by trying the questions in the "relative date.pfd" file below. You do not need to print them or hand them in. Just see if you can answer the questions.
relativedating.pdf | |
File Size: | 355 kb |
File Type: |
Radiometric Dating - Week of May 25
Task 1: Please watch the "How does radiocarbon dating work" video. (Note - radiocarbon dating is the same as radiometric dating). Also, check out the photo at the right - this is a great visual for half lives.
Task 2: Play around with the java applet below. You may need to check your browser settings to allow both java and pop-ups.
If the simulation on the left doesn't work for you, try this one or this one (needs flash)
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Task 3: Time for science we can eat! You will need some materials for this. See if you can track down some small bag of multicoloured candy/chocolate. M&Ms, Smarties, Skittles, loose Rockets...you get the idea. Complete the M&M Half Life activity below with your tasty treats - remember, you don't get to snack away until your experiment is over! Please post your results on the Unit 3 page of your ePortfolio.
mandm_half_life_activity_2017.doc | |
File Size: | 73 kb |
File Type: | doc |
Week of June 1
Task 1: Reflection #8
Please answer the following questions on your "Reflections" page of your ePortfolio. Remember to use full sentences and do your best! Don't forget to cite your sources - a weblink is fine.
1) What type of burial is best for fossilization? Why?
2) Why is the fossil record incomplete? Give at least 2 reasons.
3) What is the difference between relative time and absolute time? (Don't say one is relative and one is absolute - I know you thought it!)
4) Why are unconformities in the rock layers important features?
5) What is a half-life, and how it used in radiometric dating?
6) If a 20g of Carbon14 has a half-life of 5,700 years, what would be the half-life of a 40g sample?
7) What percent of Carbon14 is left after 5 half-lives?
8) How is learning about fossils and geological time periods relevant to our everyday lives? Why should we care?
Task 2: Please use the remainder of this week to finish up any missing assignments from Unit 2 or 3. We will be moving on to Unit 4, Weather, next week.
Task 1: Reflection #8
Please answer the following questions on your "Reflections" page of your ePortfolio. Remember to use full sentences and do your best! Don't forget to cite your sources - a weblink is fine.
1) What type of burial is best for fossilization? Why?
2) Why is the fossil record incomplete? Give at least 2 reasons.
3) What is the difference between relative time and absolute time? (Don't say one is relative and one is absolute - I know you thought it!)
4) Why are unconformities in the rock layers important features?
5) What is a half-life, and how it used in radiometric dating?
6) If a 20g of Carbon14 has a half-life of 5,700 years, what would be the half-life of a 40g sample?
7) What percent of Carbon14 is left after 5 half-lives?
8) How is learning about fossils and geological time periods relevant to our everyday lives? Why should we care?
Task 2: Please use the remainder of this week to finish up any missing assignments from Unit 2 or 3. We will be moving on to Unit 4, Weather, next week.