Weathering and Erosion

What is weathering?

• The chemical or physical breakdown of rocks

• The temperature outside

• Rain, Snow, and natural disasters

• The direction the wind blows

Which is an example of chemical weathering?

• Water repeatedly freezing and thawing to break down rocks

• Plant roots growing into a rock to expand the cracks

• Oxidation turning the rock a different color

• Abrasion

What is an example of physical/mechanical weathering?

• Acids in water breaking down a rock

• Rusting

• Hydrolysis

• Salt Wedging

What is chemical weathering?

• Breaking a rock by changing the enzymatic composition

• Breaking down a rock with minerals

• Salt water evaporating inside a rock and growing a salt deposit

• An example of erosion

What is erosion?

• Water freezing and thawing inside of rocks

• Used to describe mechanical and physical weathering

• The process of breaking apart a rock into sediments

• Carrying sediments to new locations through wind, water, and sometimes ice

Water can break down rocks by...

• Carrying acids

• Carrying them to the bottom of a body of water and having fish and other sea creatures alike change the rock over years and years

• Running over rocks and smoothing out the surface

• I don't know

• Evaporating and leaving salt behind

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

Does uncultivated farmland cause soil erosion if it is uncultivated for a long time?

• No

• Yes

Tags

NGSS.MS-ESS2-2

What causes soil erosion?

• Not planting things in farmland

• Construction

• Plant roots

Tags

NGSS.MS-ESS2-2

What is terrace cultivation?

• Growing crops on the sides of hills and mountains

• Planting crops on top of buildings in gardens

• Growing crops on a terrace

• Planting crops in fields

Tags

NGSS.MS-ESS3-4

Breaking apart rocks physically, such as plant roots growing into rocks or ice wedging is _______ weathering. (CORRECT SPELLING)