Why is air pressure greatest at sea level?
A. Air pressure depends on the weight of overlying air molecules.
B. Air pressure depends on the temperature of air and air near Earth's surface is warmest.
C. Air pressure depends on the force with which air molecules strike Earth's surface; molecules near Earth's surface strike Earth with more force.
D. Air pressure is inversely proportional to the density of air.
Answer: A
You might also like to view...
The charges with sodium chloride are all balanced-for every positive sodium ion, there is a corresponding negative chloride ion. Since its charges are balanced, how can sodium chloride be attracted to water, and vice versa?
A. This is not a matter of attraction. Sodium chloride dissolves in water because water provides a medium in which the individual sodium and chloride ions can disperse. B. Hydrogen bonding in water allows the sodium chloride molecule to be attracted to the water molecule. C. Dispersion forces come into play as the sodium chloride and water come into close proximity. D. As a water molecule gets close to the sodium chloride, it can distinguish the various ions and it is, thus, attracted to an individual ion by ion-dipole forces.
Which of the following pairs are universalizing religions?
A) Judaism and Buddhism B) Christianity and Islam C) Buddhism and Hinduism D) Christianity and Hinduism E) Islam and Hinduism
Travelers flying west from Los Angeles (118° W) to Tokyo (139° E) will cross the ________ and, as a result, they will ________ when crossing this meridian
A) International Dateline; gain a day (Example: Sunday becomes Saturday.) B) International Dateline; lose a day (Example: Saturday becomes Sunday.) C) prime meridian; gain a day (Example: Sunday becomes Saturday.) D) prime meridian; lose a day (Example: Saturday becomes Sunday.)
What is the youngest event represented in this block diagram?
A. retreat of the seas B. deposition of the top layer C. erosion of a canyon by a river D. formation of the lowest layer