Mudflow

High school (ages 12+)
Environment & Earth

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/mudflow

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 a mudflow?A mudflow is a fast-moving river of mud made of soil, rocks, and water that slides down a slope. It has a lot of water, more than 20-30% of its volume, which makes it flow like a thick liquid.
2. Why do mudflows happen?Mudflows usually start when heavy rain, melting snow, or volcanic activity adds a lot of water to the ground, making the soil weak and slippery. They can also be triggered by removing trees or building on slopes.

Rheology: The study of the flow of matter, particularly the deformation and flow of non-Newtonian fluids like mudflows.
Pore Water Pressure: The pressure of water held within the pores of soil or rock, which can reduce the material's strength.
Pyroclastic Deposits: Fragmented volcanic material ejected during an eruption, such as ash, pumice, and volcanic bombs.