How does your own state soil compare
with the ones you analyzed?
Every state in the U.S. has designated
a representative soil. You can access photographs, descriptions,
and other data about your state's soil. Click here
to access the list of state soils, then explore the
photograph and description of your state's designated
8. Go to the Web site for your state
soil and estimate the depth of the topsoil.
You can also find out the average
annual precipitation for your state. Click here
to access a list of states. Click on your state abbreviation
in the list, then click the GIF image at the top of
the list. Use the map to estimate the average precipitation
at the location of your state soil.
9. Go to the Web site for the United
States precipitation map and find the average annual
precipitation in your state.
10. Plot the point for your state
on the graph of topsoil depth versus precipitation.
How does your state's soil compare to the others?
11. Do average precipitation amounts
appear to be related to the depth of topsoil in an area?
If so, describe how. If you see no evidence for the
relationship, suggest another factor you could plot
versus topsoil depth to look for a relationship.