AP Environmental Science Soil and Soil Dynamics

The two main agents of erosion are...

• wind and flowing water
• gravity and frost wedging
• oxygen and water
• carbon dioxiede and wind

Tags

NGSS.MS-ESS2-2

Which of the following is the correct order of soil particles in order of increasing particle size?

• clay-sand-silt
• sand-clay-silt
• silt-clay-sand
• clay-silt-sand

Soil sample that is 60% clay, 30% silt, and 10% sand has which texture? 

• clay
• clay loam
• sandy loam
• silt 

Which is the correct order of soil horizons starting at the surface?

• A, B, E,C, O
• O, A, B, C, E
• O, E, A, B, C
• O, A, E, B, C

The deep, underlying non-soil materials

• B horizon
• E horizon
• O horizon
• Bedrock

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS3-1

The layer where minerals that were leached out of layers above accumulate

• A horizon
• B horizon
• E horizon
• O horizon

A mixture of soil, loam, and detritus; the topsoil

• A horizon
• B horizon
• E horizon
• O horizon

The rate at which water flows through the soil is called soil percolation or ______.

• Groundwater

• Permeability

• Soil Pores

• Porosity

Which soil component has the least capacity for holding water?

• silt
• clay
• sand
• humus

The layer(s) of soil in which most of the humus and soil organisms are contained:

1- leaf litter, horizon O

2- topsoil, horizon A

3- subsoil, horizons B and C

• 1 only

• 2 only

• 1 and 2 only

• 2 and 3 only

• 1, 2, and 3