The Richter magnitude is based on
A) the amount of damage caused.
B) the maximum amplitude recorded.
C) the difference in arrival times of S and P waves.
D) the distance from the epicenter.
Answer: B
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When a star collapses to become a black hole, its mass
A. decreases. B. increases. C. remains unchanged.
The most common mineral in Earth's crust is ________ and the second most common mineral is ________
A) quartz; feldspar B) feldspar; quartz C) silicate; carbonate D) olivine; feldspar
You are facing north and the wind is blowing in your face. This wind would be called a(n) ____
A) south wind B) east wind C) north wind D) southerly wind
Geographers define overpopulation as
A) too many people in the world. B) too many people compared to environmental capacity. C) too many people in a region. D) All of these answers are correct.