Unit 8 Lesson 1 Weathering

This type of weathering occurs when rocks weaken then break down due to chemical changes in the composition of the rock.

• mechanical weathering
• chemical weathering
• erosion weathering
• deposition

These rocks were made smooth by wind blowing smaller rock particles across their surface.  This is an example of:

• ice wedging
• chemical weathering
• acid rain
• abrasion

Tags

NGSS.MS-ESS2-2

These rocks were broken apart from the continuous freeze/thaw of water in the cracks of the rocks. This is an example of:

• ice wedging
• acid rain
• permeability
• abrasion

Tags

NGSS.MS-ESS2-2

These gravestones have slowly broken down and turned a blackish color due to the action of:

• ice wedging
• abrasion
• acid rain
• mechanical weathering

A metal statue slowly turning green after years of being outside is an example of:

• mechanical weathering
• chemical weathering

Tags

NGSS.MS-PS1-2

A piece of sandstone changing color (from brown to rusty red) from exposure to water and air is an example of:

• mechanical weathering
• chemical weathering

Lichens (small green plants) growing on a large boulder release enzymes and other acids that slowly break the rock apart. This is an example of:

• mechanical weathering
• chemical weathering

Plants produce weak acid that slowly dissolve rock that surrounds roots

• Chemical
• Mechanical

Tags

NGSS.MS-PS1-2

Ground breaks away by animals burrowing

• Chemical

• Physical

Rock is physically broken down into smaller pieces by processes such as freezing and thawing, release of pressure, plant growth, actions of animals and abrasion.

• Chemical Weathering

• Physical Weathering