Grime

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/grime

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 primary component?Black carbon (soot) from incomplete combustion processes
2. What is the formation mechanism?Atmospheric deposition of airborne particles, binding via moisture and surface interactions
3. Why does grime look black?The black color comes from soot, which is made of tiny black carbon particles that come from things like diesel engines and factories.
4. How does grime damage old buildings?Grime can hide details and also contains acids that eat away at stone, metal, and paint, making the surfaces weaker and more worn.

Black Carbon: A component of particulate matter formed by incomplete combustion, strongly absorbing light.
Anthropogenic Activities: Activities or processes that are caused by humans, rather than natural.
Substrate: The underlying layer or surface on which something is applied or forms.
Calcareous Materials: Materials, such as limestone and marble, that are primarily composed of calcium carbonate.