What scale predicts the potential threat posed by an asteroid impact?
A. Torino scale
B. Mercalli scale
C. Richter scale
D. Fujita scale
Answer: A
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The fertile soils of the Rift Valley are explained by
A) extensive glaciation during the last ice age. B) volcanic activity associated with the area. C) large-scale agricultural projects. D) voluminous river systems in the area. E) voluminous river systems and extensive glaciation.
You are hopping on boulders beside a quiet stream that runs through a V-shaped valley. How did the boulders get there? The boulders were likely
A) carried in the stream then deposited at the stream bank. B) produced when chemical weathering broke up the rock along the sides of the valley. C) deposited along the stream bank by wind. D) none of the above
Standing waves are important in the physics of what kind of wave?
a. Seismic sea waves b. Capillary waves c. Seiche waves d. Progressive waves
What is the definition of a scientific hypothesis?
A. a simulation of a system being studied B. a testable explanation of data C. the data needed to answer a question D. procedures carried out under controlled conditions to gather information E. a widely accepted theory