Soil Properties

Saved in:
Link to Resource: http://www.earthsciweek.org/classroom-activities/soil-properties
Resource Type:Classroom Activities; Curricula and Instruction
Grade Level:
5 6 7 8 9 10
Language:English
Organization:American Geosciences Institute (AGI); Earth Science Week (ESW); National Park Service (NPS)
Summary:"""""Soil porosity"""" refers to the amount of pore, or open space between soil particles. Pore spaces may be formed due to the movement of roots, worms, and insects; expanding gases trapped within these spaces by groundwater; and/or the dissolution of the soil parent material. Soil texture can also affect soil porosity. Soil porosity is important for many reasons. A primary reason is that soil pores contain the groundwater that many of us drink. Another important aspect of soil porosity concerns the oxygen found within these pore spaces. All plants need oxygen for respiration, so a well-aerated soil is important for growing crops. Compaction by construction equipment or our feet can decrease soil porosity and negatively impact the ability of soil to provide oxygen and water. In this activity, students measure the porosity of different substrates: sand, silt, clay, and gravel. The students measure how much space is between the particles and compare that to what types of vegetation grow in locations with that substrate."
Earth Science Big Ideas:Big Idea 3
NGSS Discplinary Core Ideas:ESS2.A; ESS3.C
NGSS Performance Expectations:5-ESS2-1; HS-ESS2-2; MS-ESS3-1
NGSS Science and Engineering Practices:Analyzing and interpreting data; Constructing explanations (for science) and designing solutions (for engineering); Developing and using models
NGSS Crosscutting Concepts:Cause and effect: Mechanism and explanation; Stability and change; Systems and system models
Subjects: 6-8; earth science week; geology; high school; middle school; soils
Tags: Add Tag
No Tags, Be the first to tag this record!

Similar Items