Exploring Erosion and River Dynamics

What is the primary difference between erosion and weathering?

• Erosion involves transport, weathering does not

• Weathering involves chemical processes only

• Erosion cannot involve water, unlike weathering

• Weathering involves the removal of rocks

What does abrasion refer to in the context of erosion?

• Rocks increasing in size due to water

• Rocks wearing away river beds and banks

• Rocks being carried by water

• Chemical breakdown of rocks

Tags

NGSS.MS-ESS2-2

What role does attrition play in erosion?

• Breaking rocks using plant roots

• Reducing rock size by collision

• Transporting dissolved minerals

• Increasing the chemical reaction of rocks

How does hydraulic action contribute to erosion?

• By freezing of water in cracks of rocks

• By transporting large boulders downstream

• Through chemical reactions with minerals

• By water forcing against river banks

Tags

NGSS.MS-ESS2-2

What is corrosion in the context of river erosion?

• Deposition of materials along the riverbed

• Attrition of rocks into smaller pieces

• Dissolution of rocks by acidic water

• Physical scraping of rocks

Tags

NGSS.MS-ESS2-2

What does traction refer to in river transportation?

• Large particles rolling along the riverbed

• Chemical reactions occurring in water

• Light materials floating in the water

• Dissolving minerals in water

What is saltation in the context of river processes?

• Suspended particles floating in the water

• Minerals dissolving into the water

• Large particles bouncing along the riverbed

• Smooth rocks breaking into smaller pieces

Which material is mostly carried in suspension in rivers?

• Dissolved minerals like calcium

• Gravel and coarse sand

• Pebbles and boulders

• Clay, silt, and fine sand

What is the role of solution in river transportation?

• Causing physical abrasion of river banks

• Transporting dissolved minerals invisibly

• Forming waterfalls and ox-bow lakes

• Carrying large rocks along the riverbed

Tags

NGSS.MS-ESS2-4

What future topics will be covered related to river processes?

• Volcanic activities and their effects on rivers

• Mountain formation and erosion

• Waterfalls, ox-bow lakes, and v-shaped valleys

• Ocean currents and tides

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4