When heat is added to boiling water, the water temperature
A. increases.
B. decreases.
C. stays the same.
Answer: C
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The magnetic field lines about a bar magnet
A. are both external and internal to the magnet. B. are external only. C. follow an inverse-square law. D. none of the above
The Polynesian colonies used a system of shells and bamboo to represent island positions for navigation
a. True b. False
The transformation of snow into glacial ice in Antarctica takes ________ than in midlatitude alpine glaciers because ________
A) less time; more snow fall in the polar regions each year slows the glacier formation process B) less time; there is more melting and refreezing in the midlatitudes and, therefore, it takes much longer there C) longer; the long summer days in Antarctica (up to 24-hours) results in more sunlight impeding the glacier development process D) longer; the dryness of the Antarctic climate and minimal snowfall as compared to wetter climates with constant snowfall
In what form is fluorine administered when it is used to prevent tooth decay?
A) F- B) F C) F2 D) F+