Soil Water Air Review

The layers of soil in the soil profile are called:

• horizons

• latitudes

• layers

• peds

The medium-sized soil particle is called:

• Sand

• Loam

• Silt

• Clay

Soil erosion is caused by ____ and ____.

• Wind, water

• Air, weathering

• Walking, water

• mayonnaise, mustard

An example of "minimum tillage:"

• Deep plowing

• Planting on the contour

• Terracing

• No-till

About 97% of the water on earth is:

• Freshwater

• Saltwater

• Brackish water

• Tap water

Ground water:

• Is found in the soil

• Does not run off

• Does not evaporate

• All of these

The Neuse River Basin is an example of a:

• River

• Groundwater source

• Watershed

• Ocean

In agriculture, the main use of water is:

• For spraying pesticides

• For washing animals

• For irrigation

• For cleaning produce

Point source pollution is where water is contaminated:

• From the air

• From a specific, identifiable location

• By animals

• None of these

Counting small organisms in a water sample to gauge pollution levels is called:

• pH testing

• Turbidity testing

• Chemical testing

• Macro-invertebrate count/testing