Ice stream

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-stream

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. What is the geographic distribution?Primarily found on the Antarctic and Greenland ice sheets
2. What is the global impact?Major conduits for ice discharge, directly influencing global sea level
3. Why do ice streams move so fast?They slide over a thin layer of water or soft sediment at the bottom, which reduces friction, like a glacier on ball bearings.
4. How do ice streams affect sea level?When ice streams speed up, they send more ice into the ocean, which melts and raises sea level.

Ice Sheet Dynamics: The study of the physical processes governing the movement and behavior of large ice masses.
Basal Conditions: The physical state and properties of the interface between the ice and the underlying bedrock.
Grounding Line: The point where an ice sheet or glacier transitions from resting on bedrock to floating on the ocean.
Ice Shelf Buttressing: The stabilizing effect of floating ice shelves on the flow of upstream ice streams.