Weathering and Soil Flashcards

Flashcards about weathering and erosion

Mechanical Weathering

Breaking rocks using physical forces

Chemical Weathering

Rocks are changed by chemicals like water or acid

Erosion

The movement of weathered materials from one place to another

Ice, Gravity, Wind, Flowing water, Plants

Can cause weathering in pictures

Erosion

A wave washes away sand from a beach

Erosion

A rushing stream carries pebbles downstream

Weathering

The carried pebbles are broken and worn down as they move

Erosion

The pebbles scrape the rock of the stream, causing bits of rock to break off as sandy sediment

Weathering

Breakdown of rocks

Erosion

Movement of sediment and rock by natural agents

Weathering vs Erosion

Weathering breaks down rocks, erosion moves them

Natural forces that cause erosion

Water, wind, ice

Mechanical Weathering Example

Ice wedging

Chemical Weathering Example

Acid rain dissolving limestone

How plants help prevent erosion

Their roots hold soil together

Landforms created by erosion

Canyons, valleys

Water Weathering and Erosion

Weathering breaks down rocks, erosion carries them away

Importance of understanding Erosion and Weathering

Helps us understand landforms, impacts on human activity