Quiz 6-1 Weathering and Soil

It is a hoodoo with harder rock at the top and softer rock under

It is a hoodoo with softer rock at the top and harder rock under

The hoodoo shows the different soil horizons

The hoodoo explains how the Grand Canyon was formed.

a turtle is digging a burrow in rocky soil

lichen is growing on a rock and the acid it produces is making it break apart

a rock has become cracked where water has frozen and thawed numerous times

water has dissolved soft limestone rock in an underwater cave

a turtle is digging a burrow in rocky soil

lichen is growing on a rock and the acid it produces is making it break apart

a rock has become cracked where water has frozen and thawed numerous times

water has dissolved soft limestone rock in an underwater cave

O-litter

A-topsoil

B-subsoil

C-bedrock

O-topsoil

A-litter

B- subsoil

C-bedrock

O-topsoil

A-subsoil

B-litter

C-bedrock

hot

cold

dry

humid

Formations like the hoodoo have hard and soft rock creating different weathering rates

Scientists can infer how landforms were created based on what we observe today

It classifies weathering into chemical and mechanical.

The Grand Canyon was created by mechanical weathering.

it will weather faster because water can enter it.

it will weather slower because water can not enter it.

it will not weather because it is a stronger material.

it will dissolve in 10 years.

chemical weathering breaks into smaller pieces, mechanical weathering changes the material

mechanical weathering breaks into smaller pieces, chemical weathering changes the material

both chemical and mechanical weathering change the material

neither chemical not mechanical weathering change the material

lichen produce acid which dissolve rock

plant roots can break rocks apart

plant roots grow into soil slowing erosion

litter falls from trees and decays helping soil formation