Jill Burns COSEE-West Workshop Lesson Plan Glaciers As Indicators of Global Climate Change Background: Indicators of global climate change can be found in a variety of places on Earth, whether you investigate oxygen isotopes locked up in ice cores, ancient pollen samples found in soil cores, or if you study the phenomena of El Nino and La Nina in recent history. A more obvious indicator of global climate change would be the disappearance of glaciers and the break up of ice shelves in our high altitude or arctic regions of the world. But how does this loss of ice and snow have larger effects on our planet? How will the disappearance of these moving slabs of ice have an impact on the different systems of our planet? Intended audience: Junior/senior Earth systems science students Length of lesson: 3 days over 70 minute periods IL State Learning Standards: State Goal 11A – Know and apply the concepts, principles, and processes of scientific inquiry: • • 11.A.5a – Formulate hypotheses referencing prior research and knowledge 11.A.4f – Using available technology, report, display, and defend to an audience conclusions drawn from investigations State Goal 12E – Know and apply concepts that describe the features and processes of the Earth and its resources: • • 12.E.4a – Explain how external and internal energy sources drive Earth processes (e.g. solar energy drives weather patterns; internal heat drives plate tectonics). 12.E.5. - Analyze processes involved in naturally occurring short-term and long-term Earth events (e.g. floods, ice ages, temperature, sea-level fluctuations). Lesson plan objectives: The students will be able to: • • • • • • • • Understand the causes of glacial flow and glacial retreat Explain the relationship between ice, insolation, albedo, and global warming Identify specific examples of glacial retreat over time across the Earth Gather pertinent details as to loss of glacial ice over time Describe the difference between loss of land-locked glacial ice and sea ice Analyze the effects of loss of glacial ice on the four major spheres of the Earth Practice communication and listening skills in small, collaborative groups Strengthen public speaking and presentation skills Relevant vocabulary: glacial accumulation, glacial retreat, albedo, insolation, global warming, global climate change, alpine glacier, continental ice sheet, sea ice, cryosphere, atmosphere, hydrosphere, lithosphere, and biosphere Materials: computers or computer lab, Earth systems science textbooks, overhead projector, transparency sheets, transparency markers, ice, water, beakers, Popsicle sticks, project handout and rubric Procedure: Ideally this assignment is designed for a 70-minute class period and would start on a Thursday and be concluded with presentations on a Monday. However, plans and lesson can be adjusted as needed due to different time schedules. Day 1: 1. 2. 3. 4. 5. 6. 7. Before class, set up two beakers. One will have water with ice cubes floating in it, the other will be filled with water and have Popsicle sticks supporting ice cubes over the beaker. Make sure to mark the starting water level for each beaker on the side. Review with students the causes glacial flow and retreat. Using overhead transparency of an alpine glacier and continental ice sheet, identify zones of accumulation and zones of ablation. Review concepts of basal slip and plastic flow as mechanisms for movement in glacial ice. Introduce students to the concept of an Earth systems science analysis (ESS). Demonstrate how to work through an ESS analysis to show how an event will impact the major spheres (biosphere, atmosphere, hydrosphere, and lithosphere). Review connection between insolation, glacial ice, and albedo. Break students up into small groups for critical thinking activity. Have students work on an initial ESS analysis focused on the destruction of the cryosphere due to global warming. Options would be to create bullet point lists for each sphere, concept maps, Venn diagrams, etc. Ask students to share examples of side effects in large group discussion. Post answers on the white board or on overhead transparency. See if anyone mentioned sea-level change. If not, lead a short discussion as to how ice could influence the oceans. Show students sea ice vs. continental ice sheet demo. Demonstrate how melting sea ice does not influence sea level change, whereas land-locked ice sheets and glaciers would. Have students discuss with a partner a possible explanation as to what they observed in the two beakers. Share answers as a large group. Introduce students to climate change project. Handout and go over project directions and rubric. Break students up into project groups. Day 2: 1. Project workday: either have students in computer/writing lab or have department laptop carts available. Day 3: 1. Presentations Assessment: The students will be assessed on their presentation skills, project quality, accuracy and relevancy of information, and small group participation by using the project rubric. The major concepts addressed in the Day 1 lesson will also be included on the glaciers chapter quiz following the presentation day. Where Did All the Ice Go??? Glaciers As Indicators of Global Climate Change Goal: For this project, you and your group members will be investigating how glaciers can be used as evidence for global climate change. You will be asked to find specific examples of such evidence around the world and explain what side effects this loss of ice is having on both local and global environments. Suggested locations to investigate: • • • • • • • • • • • Glaciers National Park Mt. Kilimanjaro Antarctica Greenland Himalayas Alps (Switzerland, Austria) Andes (Patagonia) Cascade Range Rocky Mountains Pyrenees New Zealand Required research: • • • • • • • Three specific examples of glaciers from different locations on Earth that have been in retreat over the last 100-200 years Rate of glacial retreat for each and time period in which measured Description of how glaciers have changed over time Current size and status of each glacier Visual evidence of change (before and after or time-lapse photographs) over time for each glacier Current side effects on local environment and society for each glacier Current side effects on global environment and society Presentation format: You and your partners will create a presentation to be given on Monday. The presentation is to be constructed using Google Documents Presentations. Formatting requirements are as follows: • Title slide • • • • • • • Works cited/bibliography slide Minimum of 10 slides Easy to read (don’t overload them with info!) Proper spelling & grammar ALL research requirement satisfied Visual aids NO PLAGARISM!!! Due Date & Time: Links to your final Google Documents Presentation must be emailed to me by 7:45 am on Monday morning. If they are not, they will be considered late. Where Did All the Ice Go??? Partner names: _____________________________________________ Name of glaciers: ___________________________________________ Failed to Meet Requirement Title slide (2 pts) Glacier #1 (4 pts) Rate of retreat (8 pts) Changes over time (8 pts) Current status (8 pts) Visuals of change (8 pts) Effects on local enviro (8 pts) Glacier #2 (4 pts) Rate of retreat (8 pts) Changes over time (8 pts) Current status (8 pts) Visuals of change (8 pts) Effect on local enviro (8 pts) Below Average Average Above Average Exceeded Requirements Glacier #3 (4 pts) Rate of retreat (8 pts) Changes over time (8 pts) Current status (8 pts) Visuals of change (8 pts) Effect on local enviro (8 pts) Effect on global enviro (16 pts) Works cited slide (2 pts) Minimum of 10 slides (4 pts) Spelling & grammar (4 pts) Easy to read (4 pts) Project grade: ___________________/ 164 points
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