Earth Science Digital Image Library - Lichens

Grade Levels

5th Grade, 8th Grade

Course, Subject

Science and Technology and Engineering Education, Science

Related Academic Standards

Describe how landforms are the result of a combination of destructive forces such as erosion and constructive erosion, deposition of sediment, etc.

3.3.8.A1 3.3.8.A1

Distinguish between physical and chemical weathering.

Compare and contrast the types of energy that drive Earth’s systems.

S8.D.1.1.2 S8.D.1.1.2

Describe natural processes that change Earth’s surface (e.g., landslides, volcanic eruptions, earthquakes, mountain building, new land being formed, weathering, erosion, sedimentation, soil formation).

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Topic

Weathering

Description

In chemical weathering, a rock is broken down by chemical reactions that change its mineral composition and physical/chemical properties. Lichens, in this example, become a component of this process in that they secrete acidic solutions which aide in the chemical decomposition of this walkway.

Location

Shokan, Ulster County, NY

Credits

With support from the Center for Applied Technologies in Education, The Earth Science Digital Library is an initiative authored by Russell Agostaro, Newburgh Enlarged City School District, Newburgh, New York.

Description

The Earth Science Digital Image Library is an archive of quality digital images for teacher and/or student reference in their studies of Earth Science. For additional information about the image, please click on a link below:

Earth Science Digital Image Library - Lichens