Weathering and Soil Erosion

When rocks are broken down into smaller pieces

• erosion
• weathering
• sediment

When water, ice and wind move particles of rock and soil from one place to another

• sediment
• weathering
• erosion

Soil is a mixture of the following except

• weathered rock particles

• dead plant material

• garbage

• dead animal material

Water, wind, gravity, ice, plants are all part of this kind of weathering

• Chemical

• Mechanical

The process that changes the minerals that rocks are made of. This is a type of weathering

• Physical Weathering

• Erosion

• Chemical Weathering

• Breaking Rocks

Which of the following is NOT a type of chemical weathering?

• water
• carbon dioxide
• ice wedging
• living organisms secreting acid to break down rocks

What are the two factors that affect the rate at which weathering occurs?

• climate and mass of rock
• climate and size of rock
• type of rock and size of rock
• type of rock and climate

Which of the following is NOT a type of physical weathering?

• burrowing plants
• ice wedging
• plant roots
• acid rain

The diagrams  shows a natural process that weathers rock.
 Which statement best explains why this process results in weathering?

• frozen water acts as a solute
• water expands when it freezes
• the mass of water increases when it freezes
• frozen water dissolves most types of rock

What is mechanical weathering?

• Process through which rocks are physically broken into smaller pieces.
• Rocks are broken down through chemical changes.
• Rocks are worn away from acid in plant roots.
• Rocks broken down by machinery.