Which of the following best describes the Mercalli earthquake scale?
A. Is a quantitative measure of earthquake intensity.
B. Is a qualitative measure of earthquake intensity.
C. Measures the amplitude of the strongest S-wave.
D. Measures the amplitude of the strongest P-wave.
E. Measures the amplitude of the strongest surface wave.
Answer: B
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Movement of a fluid when part of it is heated is
A) convection. B) advection. C) sublimation. D) conduction.
How are the ionic and covalent bonds alike?
What will be an ideal response?
Modern oceanography began with the efforts of ____, who trapped his ship in pack ice to explore the Arctic
A) ?Forbes B) ?Wilkes C) ?Thomson D) ?Nansen
Which of the following is not a hypothesis for how life began?
A) Methane and hydrogen sulfide from deep-sea hydrothermal vents and hot springs like those at Yellowstone National Park provided the necessary materials. B) Methane and ammonia in the early atmosphere combined with the help of lightning or ultraviolet light to produce the first amino acids. C) Asteroids and comets brought amino acids to Earth. D) Outgassing and related volcanic materials brought proto amino acids to the surface of the earth.