(D) basalt
(E) volcanic
- Which of the following is an example of an igneous rock?
(A) Marble
(B) Slate
(C) Limestone
(D) Granite
(E) Sandstone
- The smallest particle of soil is known as (A) clay
(B) sand
(C) silt
(D) gravel
(E) humus
- Which of the following environmental factors does NOT lower the pH of
soil?
(A) Acid rain
(B) Use of fertilizers
(C) Weathering of minerals
(D) Mine spoils
(E) All of these choices can possibly lower the pH of soil.
- Which of the types of soil listed below contains the highest amount of
nutrients?
(A) Clay
(B) Silt
(C) Sand
(D) Gravel
(E) Loam
- An example of a volcano with broad, gentle slopes and built by the eruption
of runny, fluid-type basalt lava would be (A) Mount Saint Helens
(B) Krakatau
(C) Kilauea
(D) Vesuvius
