Closely spaced isobars on a map indicate:
a. strong pressure gradient.
b. northerly winds.
c. winds of low velocity.
d. weak breezes.
A
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Which of the following is not true of soil texture?
A) It can be modified substantially by humans. B) It exerts a major control on the soil's fertility, stability, and other properties. C) It describes the size distribution of the particles in a soil. D) It can be described using a triangular plot of the percentage of sand, silt, and clay.
How thick is the deposit at the end (the “toe”) of the deposit? (Take the 6800 contour to be the top of the deposit).
The following questions are based on Map T-26a, a section of the USGS “Spring Hill, Idaho,” quadrangle (scale 1:24,000; contour interval 20 feet). You are going to calculate the approximate volume of the mass wasting deposit shown at the foot of the Pahsimeroi Mountains. What will be an ideal response?
The most important element in Eratosthenes' calculation of Earth's size was that the angle measurements of the Sun's rays with the pillar and reflection of sunlight in the well be
A. the same rays of the Sun. B. exact. C. simultaneous. D. tested by other observers.
During the past 70 million years, India has moved south from its original position. Indicate whether the statement is true or false