An increase in either the mass or the velocity (or both) produces a decrease in momentum
a. True
b. False
ANSWER: False
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The world's pressure systems are responsible for
A) mild summer and winter temperatures along coast lines. B) warm, rainless summer of Mediterranean climates. C) mild summers/winters along coasts and severe winters in interior regions. D) severe winters in interior regions. E) a greater intensity of solar energy at the equator.
What disease has the likeliest potential to depopulate large parts of the world in the 21st century?
A) AIDS B) bubonic plague (Black Death) C) H1N1 (subtype of Influenza A virus, sometimes called swine flu) D) H5N1 (bird flu) E) smallpox
If one were to map a vertical profile of groundwater resources, which of the following is CORRECT order from top to bottom?
A) Zone of aeration—zone of saturation—water table—impermeable rock B) Zone of aeration—water table—zone of saturation—impermeable rock C) Water table—zone of aeration—zone of saturation—impermeable rock D) Zone of saturation—water table—zone of aeration—impermeable rock
Spiral galaxies tend to resemble a pinwheel because ________
A) the stars in the center are very old and large while the outer edges of the galaxy contain the youngest and smallest stars B) stars in the center of galaxy are moving more slowly than the ones on the outer edges. C) the barred structures form twisted pathways that distort the flow patterns D) stars in the center of the galaxy are moving faster than the ones on the outer edges E) stars are moving from the center to the edges of the galaxy