Ice calving

High school (ages 12+)
Geography

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/ice-calving

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. How heavy is Ice calving?Major mechanism for ice loss from marine-terminating glaciers
2. What is Ice calving known for?Accelerated calving increases global sea levels
3. What is the primary drivers?Basal melt, hydrofracturing, tidal flexure, gravitational forces
4. What is the oceanographic impact?Releases freshwater and nutrients, influencing currents and stratification
5. Why do glaciers break into icebergs?Glaciers break because warm water melts the bottom, meltwater fills cracks, and tides bend the ice. All these forces make the ice weak and cause it to split.
6. How does meltwater help break ice?When meltwater fills cracks, it pushes on the walls of the cracks. This pressure makes the cracks grow until the ice breaks apart.

Mass Balance: The net difference between the accumulation and ablation (loss) of ice in a glacier or ice sheet.
Tidewater Glacier: A glacier that terminates in a body of water, where calving is a primary loss mechanism.
Hydrofracturing: The process where meltwater penetrates cracks in ice, widening them and potentially causing fracture.
AMOC: Atlantic Meridional Overturning Circulation, a major system of ocean currents that transports heat.