Chemical and Mechanical Weathering

What type of weathering is it when acid rain breaks down and changes the rock.

• chemical weathering 

• physical or mechanical weathering

• erosion

Ice wedging will

• wear down rocks as they bounce together 

• break up rocks when the water in cracks freezes and thaws

• peel away loosend material from the surface of rocks. 

Tags

NGSS.MS-ESS2-2

How do plants weather rocks?

• during photosynthesis

• when roots grow into cracks of rocks and expand the rock

• when the plant moves water from the roots to the leaves

How does freezing water cause the weathering of rocks?  The freezing water—

• keeps the rocks in place

• makes the rocks last longer

• expands cracks and breaks rocks

• causes rocks to fall in landslides

Tags

NGSS.MS-ESS2-2

The formation of stalactites and stalagmites in a cave as water mixed with carbon dioxide creates carbonic acid, which dissolves away the limestone, is an example of:

• mechanical weathering

• chemical weathering

Tags

NGSS.MS-ESS2-2

NGSS.MS-PS1-2

The breakdown of rock that results in a change in its chemical composition is called:

• chemical weathering

• mechanical weathering

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

Tags

NGSS.MS-ESS2-2

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

• mechanical weathering

• chemical weathering

Tags

NGSS.MS-PS1-2

Which of these terms describes the process of acid rain wearing out limestone?

• deposition

• chemical weathering

• physical weathering

• erosion

weathering is the breaking down of rocks by chemical reactions.

• Chemical

• Physical

• Deposition

• Erosion

Tags

NGSS.MS-ESS2-2