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Weathering The wear and tear of rock exposed at Earth’s surface.

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Presentation on theme: "Weathering The wear and tear of rock exposed at Earth’s surface."— Presentation transcript:

1 Weathering The wear and tear of rock exposed at Earth’s surface

2 Types Physical- rock is broken into smaller pieces (sledgehammer smashing rock) Chemical-Rock is actually changed in form (limestone dissolving in water.)

3 Agents of Physical Weathering
H2O (Frost Wedging) Plant roots Pressure unloading Abrasion Wetting and drying

4 Agents of Chemical Weathering
H20 (hydration) C02 (carbonation) O2 (oxidation)

5 Climate WATER (humidity is ESSENTIAL!!) “Wetter is Better!”
COLD, humid climates favor physical weathering WARM, humid climates favor chemical weathering

6 Frost Wedging (Physical)

7 Chemical Weathering

8 Factors Affecting The Rate of Weathering
Composition (Some rocks are tougher, or more resistant, than other rocks) Shape (angularity helps-irregular edges break off) Size (smaller particles weather faster) ****Climate (humidity)

9

10 Today

11 Animations Formation of a cave (chemical)
Formation of an arch physical)

12 Delicate Arch

13 Hoodoos

14

15 Thor’s Hammer

16 The Indian Princess

17 The Three Wise Men

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21 The Wave

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