(1) melting and solidification (2) weathering and biologic activity

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Presentation transcript:

(1) melting and solidification (2) weathering and biologic activity The diagram shows soil. Which two processes produced the layer of dark brown to black soil? (1) melting and solidification (2) weathering and biologic activity (3) erosion and uplifting (4) compaction and cementation

Weathering Erosion

WEATHERING is the breakdown of Earth’s surface (physical & chemical).

The two things usually occur together! WEATHERING is the breakdown of Earth’s surface (physical & chemical). EROSION is the transportation of weathered sediments. The two things usually occur together!

There are four AGENTS OF EROSION Wind Water Glaciers Mass Wasting (Gravity)

Agents of erosion leave clues on the sediments… Water- smooth and round

Agents of erosion leave clues on the sediments… Water- smooth and round Wind- flat edge with holes

Agents of erosion leave clues on the sediments… Water- smooth and round Wind- flat edge with holes Glaciers- “scraped” with visible lines

Agents of erosion leave clues on the sediments… Water- smooth and round Wind- flat edge with holes Glaciers- “scraped” with visible lines Mass Wasting- all shapes and sizes (Gravity)

The sedimentary rocks conglomerate and breccia are shown below ABRASION! They are the same in most respects, except for the fact that one was formed in water and the other was not. Which formed in water and how can you tell? (1) Breccia, because it has angular fragments (2) Conglomerate, because it has angular fragments (3) Breccia, because it has rounded fragments (4) Conglomerate, because it has rounded fragments

Glacier!

Wind!

Gravity! (Mass Wasting)

Water!

Wind on Mars!