Is there evidence to show that valley glaciers are shrinking?

Key Ideas:

·         Investigation of an issue has to be supported by evidence and counter arguments should be considered.

·         Changes occur over time and may be due to human interference

Terms:

·         Valley glacier

·         Receding

·         Investigation

·         Counter argument

·         Evidence

Starter:

Introduction to the process of investigation

Tasks:

·         Research the investigation question using http://www.bbc.co.uk/science/earth/water_and_ice/glacier as a starting point

·         View the video at http://www.bbc.co.uk/news/world-south-asia-15216875

·         Produce a single sided sheet to show your findings from the investigation

Student investigation result

Vanishing glaciers by Beth

View more presentations from ckzebra.

Glacial Erosion

Key Ideas:

·         There are two main processes of glacial erosion: Abrasion and Plucking, plus one main type of weathering: Freeze-thaw

·         Valley glaciers are more effective at erosion than ice sheets.

Terms:

·         Erosion

·         Abrasion

·         Plucking

·         Freeze-thaw weathering

·         Valley glaciers

·         Ice sheets

Starter:

Revision/completion of work from last lesson

Tasks:

·         Using H p100-101, complete task 2 from p101. Take about ½ side of your book for each diagram.

·         On a separate page start a Glaciation Glossary

This should be a list of words/phrases and their meaning that we cover in this topic and updated each lesson.

The words/phrases you should have listed/defined by the end of the lesson is below (use H p100-101, the glossary on p259-261 and your own knowledge to write the meanings):

·         Glaciation

·         Glacier

·         Valley glacier

·         Ice sheet

·         Pleistocene ice age

·         Snow line

·         Glacial erosion

·         Abrasion

·         Plucking

Freeze-thaw weathering