Question

2. The rate at which glaciers melt is increasing globally. The Saskatchewan Glacier near Banff has receded 1.5 km in the last 75 years. The Peyto Glacier shown below receded 1320 m from 1923 to 1993. Which glacier had the greater annual rate of melting?​

Answer 1

Saskatchewan Glacier

Explanation:

You want to know the greater rate, 1.5 km in 75 years, or 1320 m between 1923 and 1993.

Rates

The rate of glacier recession is the ratio of distance to time:

Saskatchewan Glacier

(1500 m)/(75 yr) = 20 m/yr

Peyto Glacier

(1320 m)/(1993 -1923 yr) = 1320/70 m/yr ≈ 18.86 m/yr

The Saskatchewan Glacier had a greater annual rate of melting.