Soil Recap. What did you learn by digging through your soil and observing the soil of others ?. What is soil?. Loose, weathered material on Earth’s surface. Made up of: -rock particles -minerals -decayed organic material (humus) (HYOO mus ) -water -air.
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What did you learn by digging through your soil and observing the soil of others?
-decayed organic material (humus) (HYOO mus)
Which particle type
Is the best for plant
Loam- Soil that is equal parts clay, sand, and silt
What are soil horizons and
how are they formed?
Everything that lives on land, including humans, depends directly or indirectly on soil.
How does weathering
What is the difference between weathering and erosion?
Weatheringis the process by which rock materials are broken down by the action of physical or chemical processes.
Water seeps into cracks during warm weather. When temperature drops, the water freezes and expands, causing the ice to push against the sides of the crack. This causes the crack in the rock to widen.
The grinding and wearing away of rock surfaces through mechanical action of other rock or sand pebbles.
John Ford Point Monument
Also See Fig. 13.7 of the Colorado Plateau
Figure 3.8: Ship Rock Arizona
John Ford Point Monument, Arizona.
Ship Rock, New Mexico
Dissolves minerals in rock
Forms carbonic acid, dissolves limestone