OverviewStudents will learn basic glacial concepts in preparation for a trip to Exit Glacier or deeper exploration of the site online.
Objective(s)Students will learn about glacial features by examining real photographs from Kenai Fjords National Park. In small groups, students will study photos and learn how glaciers move, how they affect the lands around them, and what clues they leave when they have been in an area.
BackgroundTeachers need to read the Glaciers and Harding Icefield sections of this manual.
Together as a class, read chapters 3, 4 and 5 of Frozen in Motion.
MaterialsYou will need at least one copy of the "Harding Icefield" reading and the "Glaciers" reading, which can both be found in "Forging Connections - An Educational Resource For Kenai Fjords National Park." Download them separately or download the whole resource.
Each group will need the Glacial Detectives Worksheet. This prompts the groups with questions as they view the images at each station.
Set up seven stations and place pictures from each of the above groups at each station. Divide the class into 7 “Investigative Teams.” Tell them they will be working as a group to unravel clues about glaciers. Give each team a Glacial Detective Form and let them know they will have about 5 minutes at each station. Their job is to look at the pictures and try to answer the questions for each station in as much detail as they can. Keep time and let groups know when they should move on to the next station.
AssessmentAt the end of 30 minutes gather the groups together and discuss each of the stations. Students should be able to grasp these concepts in the group discussion:
- How are glaciers formed
- Do glaciers move? If so, what causes them to move?
- What are some signs of movement you may have seen in the photographs?
- Do glaciers affect the land around them? In what ways?
- Does the land or do people affect glaciers? In what ways?
- Are there different kinds of glaciers? Can you say what makes them different?
- Why do we have a national park with glaciers in it?
- Do you think there are any history lessons in Kenai Fjords National Park?
Park ConnectionsTo help students understand the concept of national parks spend some discussion time on station 7 and the bonus question. The four reasons we have national parks are:
- Conservation—Parks help preserve the animals and the ecosystem that supports them.
- Education—So that anyone can visit parks and learn more about the geology, biology, and cultural history that are a part of the park.
- Enjoyment—So people can come and just appreciate the beauty and wonders.
- Inspiration—Hopefully, once you’ve seen a national park you’ll leave feeling different, perhaps wanting to draw or paint or write. Inspiration is the feeling that drives many artists to create.
ExtensionsFor older groups, spend some time talking about the Harding Ice field. What is an icefi eld? How does it form? When did this one form? What conditions make Seward a place where icefields and glaciers can exist? Plan a field trip to Kenai Fjords National Park.
Alaska’s Glaciers: Frozen in Motion by Katherine Hocker, Alaska Geographic, Anchorage, 2005.