Cloud-to-ground lightning makes up what % of all lightning?
A) 10%
B) 20%
C) 25%
D) 50%
Answer: B
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The half-life of I-131 is 8.0 days. If a medical treatment involves a dose of 100. mg of I-131, how much of the isotope remains after 16 days?
A) 12.5 mg B) 25.0 mg C) 50.0 mg D) 75.0 mg
Pilots prefer to fly in the core of a jet stream
a. True b. False
Which Köppen climate type (or types) is most closely associated with the distribution of the tundra biome?
Using the global map of biome distribution (Map T-30 in the back of the Lab Manual), the map of climate distribution (Map T-29), the maps of global temperature (Maps T-28a and T-28b), the map of global precipitation (on the inside front cover of the Lab Manual), as well as information about Köppen climate types from Exercise 23, answer the question. What will be an ideal response?
A team of scientists has discovered an Earth-sized planet orbiting the star Epsilon Eridani, about 10.5 light-years from Earth. After careful calculation, the scientists estimate that the new planet has a stronger gravity field than Earth. Based upon this information, which of the following is the most reasonable hypothesis for the scientists to make about the new planet?
A. The new planet has liquid water. B. The new planet has a thicker atmosphere compared to Earth. C. The new planet has a stronger magnetic field compared to Earth. D. The new planet receives more solar insolation from its parent star compared to Earth.