Glaciers

Students will complete worksheet while in class.

Worksheet Answer Key:

  1. Slowly Starts to Move down

  2. a. gring

b. weight

c.melt

d.ridges

  1. It can drag rovks, sediment, and debris in its basal ice over the bedrock beaneath it, which causes it to be grinded and produces scratches.

Students will watch this youtube video in class, and will be expected to take notes.

Questions to check for students understanding:

  1. How old is the oldest glacier?

Answer: The age of the oldest glacier ice in Antarctica may approach 1,000,000 years old, The age of the oldest glacier ice in Greenland is more than 100,000 years old, and the age of the oldest Alaskan glacier ice ever recovered (from a basin between Mt. Bona and Mt. Churchill) is about 30,000 years old.

  1. What are the 3 types of glaciers?

Answer: ice sheets, ice caps, and outlet.

  1. Why are there glaciers?

Answer: Glaciers form where more snow falls than melts over a period of years, compacts into ice, and becomes thick enough to begin to move.

  1. How did glacier get its name?

Answer: a loanword from French and goes back, via Franco-Provençal, to the Vulgar Latin glaciārium, derived from the Late Latin glacia, and ultimately Latin glaciēs, meaning "ice".

  1. How glacier is formed?

Answer: made up of fallen snow that gets compressed into ice over many centuries.