Hi this is a fundamental geology homework I need help with, it does not take time and I need it ASAP
Polar Lab Supplemental information.
Identify the 5 Main take aways for each of the following videos.
Explain why they think it is or isn’t possible for the Arctic to return to Eocene conditions
if carbon dioxide continues to be added to the atmosphere.
8/7/2020
Nova Polar Lab
Nova Polar Lab
This lab is based on what you will learn through completion of the Nova Polar Lab. The lab
includes videos you will need to watch and interactive mini-games you will need to
complete. Click on this website and then click on the icon to enter the lab:
https://www.pbs.org/wgbh/nova/labs//lab/polar/research. Note you do not need to track
your progress through the website and can complete this lab as a guest. To begin a mission,
navigate through the lab to the globe, and select the red marker and follow the prompts.
If you get stuck, use the menu in the upper left of the web page to get to the section you
need to work on, or click on the pencil to get to your notebook and find the tab you want to
work on to advance through the lab. You will need to locate all the clickable items in a scene
before it will let you advance to the next part of the mission. You will know you have
completed all the tasks once your fieldnote book gets a sticker for that section.
Complete each section of this form as you work through the different missions for the lab.
All missions of the Polar Lab should take approximately 1.5 hours to complete, not including
time to complete this form.
* Required
Name *
Your answer
Mission 1 Ellesmere Island, Canada
The following questions are based on the first mission, including parts 1.1 through 1.12. You need to
complete the full suite of activities before you can advance to Mission 2.
You will land in the Arctic tundra and then be guided through this mission by paleontologist Jim Basinger
and paleontologist Jaelyn Eberle. Your goal is to use rocks and fossils to determine what this
environment looked like 50 million years ago and compare that to the conditions that exist today.
Why are plants that grow on tundra today so short? *
Your answer
https://docs.google.com/forms/d/e/1FAIpQLSfU8mkhXwWX8hAJSPe5W_HvtK1jcxLsuePhEEz0IUCU9Woo_Q/viewform
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Why would we find things such as coal, fossils from leafy plants, and petrified
wood on Ellesmere Island if we no longer find these types of plants and peat
bogs forming there today? *
Your answer
What conditions for water supply, and temperature produce the largest, thickest
tree rings? Which produce the smallest, thinnest tree rings? *
Your answer
What types of animals were once present on Ellesmere Island in the past? *
Note you do not need to put the scientific name, the common name or the closest animal they compare it
to will work.
Your answer
Based on the information given about the plants and animals that were present
on Ellesmere Island 50 million years ago during the Eocene, what was the climate
like for the island back then? *
Your answer
Mission 2 Lake Cores
This part of the lab takes you to the National Lacustrine Core Facility in Minnesota, where geoscientist
Julie Brigham-Grette helps you find clues to the past locked in lake cores. Next you will visit the NSF Ice
Core Facility in Colorado, where glaciologist Christo Buizert helps you analyze ancient ice cores to
determine how carbon dioxide in earth’s polar atmosphere has influenced our planet’s temperature.
https://docs.google.com/forms/d/e/1FAIpQLSfU8mkhXwWX8hAJSPe5W_HvtK1jcxLsuePhEEz0IUCU9Woo_Q/viewform
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Where is the lake located from which the sediment core was collected for this
part of the lab? *
Your answer
What two things make this lake unique in terms of it being useful to study? *
Your answer
What 3 types of evidence can be identified in the core? What does the
abundance of each type of evidence indicate about lake conditions? *
Your answer
What do the variations in tree pollen and grass pollen tell us about the how the
climate has changed around the lake? *
Your answer
What is the term used to refer to periods of time when more ice covered the
continents? What about when less ice covered the continents? *
Your answer
https://docs.google.com/forms/d/e/1FAIpQLSfU8mkhXwWX8hAJSPe5W_HvtK1jcxLsuePhEEz0IUCU9Woo_Q/viewform
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What are three things they mention as being possible causes for the changes in
the ice cover? *
Hint think about the Milankovitch cycle
Your answer
Mission 2 Part 2 Ice Cores
What is preserved in the ice that is an important key to understanding climate
conditions in the past? *
Your answer
Why is what you identified in your answer to the previous question important to
understand past climate conditions? *
Your answer
How does the concentrations of CO2 in the atmosphere affect the the earth in
terms of the occurrence and ending of ice ages? *
Ie. why do we see a correlation in the CO2 concentrations with the changes we see in temperature.
Your answer
Mission 3 Jakobshavn Glacier in Greenland and ice sheets in Antarctica
In this last mission, you will visit the Jacobshavn Glacier in Greenland with climate scientist David
Holland and also visit Antarctica with ecologist Jay Rotella, where you can see how warming waters are
impacting ice at Earth’s poles and how this impacts the biosphere. You will be asked to consider how
Earth’s natural climactic variations are being modified by human activity, and what consequences might
result.
https://docs.google.com/forms/d/e/1FAIpQLSfU8mkhXwWX8hAJSPe5W_HvtK1jcxLsuePhEEz0IUCU9Woo_Q/viewform
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How fast is Jakobshavn glacier flowing in feet per year? *
Your answer
How has the temperature of ocean water off the west coast of Greenland
changed from 1980- 2012? *
Your answer
In what year did ocean water temperature start increasing more rapidly off the
west coast of Greenland? *
Your answer
What does the stability of the Weddell Seal population indicate about changes in
ice conditions? *
Your answer
What are some of the ways in which the increase in CO2 in the atmosphere is
affecting our planet? *
Your answer
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