On a weather map, an L depicts an area of low pressure. In this region, if the isobars are closely spaced around the low, the weather forecast calls for
A) cloudy skies and windy conditions.
B) clear skies with light winds.
C) warm temperatures with light winds.
D) snow.
Answer: A
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An up quark (u) has a charge of +2/3 and a down quark (d) has a charge of -1/3. Which of the following describes a neutron?
A) uuu B) uud C) udd D) ddd
If the composition of the atmosphere changed so that less terrestrial radiation was allowed to escape, the Earth would experience
A) higher average temperatures. B) lower average temperatures. C) greater atmospheric pressure and higher temperatures. D) no change in pressure or temperature.
An object of mass 0.50 kg is transported to the surface of Planet X where the object's weight is measured to be 10 N. The radius of the planet is 4.0 × 10^6 m. What free fall acceleration will the 0.50 kg object experience when transported to a distance of 2.0 × 10^6 m from the surface of this planet?
a. 90 m/s2 c. 13 m/s2 b. 8.9 m/s2 d. 18 m/s2
Plate tectonics is currently found
A) on all of the terrestrial planets B) only on Venus and the Earth C) only on the Earth, Venus and Mars D) only on the Earth