Lesson 2 Wearing Down Earth’s Surface Pages C14-C18.

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Presentation transcript:

Lesson 2 Wearing Down Earth’s Surface Pages C14-C18

Weathering MechanicalChemical

Mechanical Breaking larger rocks into smaller pieces called “sediment” Mechanical Weathering - Geology For Kids - By KidsGeo.comMechanical Weathering - Geology For Kids - By KidsGeo.com Causes: wind, water, living things DOES NOT CHANGE MATTER!

Chemical Rocks change into new matter Water is the main factor Water dissolves some chemicals from the air and soil to form a weak acid. Limestone and Marble- easily dissolve

Prince Edward Island Red Sands

Caves Weak acids formed in rainwater seep into the ground Acids dissolve rock. Holes are formed Over time holes get bigger= CAVE CAVE ANIMATION CAVE DIAGRAM

Erosion CAUSE/weathering EFFECT/erosion Carrying away of sediments by moving water, wind, or moving ice EROSION SONG

Erosion Main cause- moving water Can increase the size of a river channel

Glacial Deposits

Sinkholes Sinkhole Animation

Landslides Picture of Landslide Causes: strong rain, gravity, earthquakes, volcanoes