Compare and contrast the core of Mercury (40 percent of the planet's volume) to that of Earth (~10 percent of the planet's volume). If Mercury is smaller, why is its core bigger than Earth's?
What will be an ideal response?
Answer: Earth is larger, so it has more mass and therefore more gravitational pull than Mercury. Thus, the iron is condensed into a tighter, smaller bundle.
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Air pressure is:
A) measured in pascals by American meteorologists. B) independent of the density of air. C) independent of the temperature of air. D) the sum of the partial pressures of its constituent gases.
In general, the movement toward sustainability is
A) declining as interest in sustainable environmental policy declines. B) a distant philosophical goal of the environmental movement. C) faced with growing opposition from economic interests. D) growing with greater interest from governments and businesses.
An air mass is characterized by similar properties of ____ and ____ in any horizontal direction at a given altitude
A) temperature; pressure B) pressure; winds C) pressure; humidity D) temperature; humidity
Ecological medicine is a new interdisciplinary field devoted to the study of ____.
A. wildlife disease B. disease connections between animals and insects C. disease connections between different insect species D. disease connections between animals and humans E. ecologically based medicines