The oceans contain about ____ carbon dioxide as the atmosphere. :

The oceans contain about ____ carbon dioxide as the atmosphere.
 A) half as much
  B) twice as much
  C) 50 times as much
  D) one-fourth as much
  E) one-third as much

Question 2

Methane
 A) concentrations in Earth's atmosphere are not increasing.
  B) is a poisonous gas.
  C) is less abundant in Earth's atmosphere than CFCs.
  D) concentrations in Earth's atmosphere have nearly doubled since 1840.
  E) is more abundant in Earth's atmosphere than carbon dioxide.

Question 3

Water vapor is
 A) a collection of tiny liquid particles.
  B) an invisible gas.
  C) sometimes a liquid and sometimes a gas.
  D) considered an aerosol.
  E) seldom present below the base of the lowest layer of cloud.

Question 4

The ideal gas law relates volume (or density) in a gas to
 A) pressure and temperature.
  B) altitude and time.
  C) wind speed and direction.
  D) temperature and rainfall rate.
  E) pressure and wind speed.

Question 5

Which of the following is not an aerosol present in Earth's atmosphere?
 A) sea salt
  B) ozone
  C) sulfuric acid
  D) ash
  E) dust

Question 6

The percent by volume of which of the following gases has the greatest variability?
 A) oxygen
  B) argon
  C) nitrogen
  D) water vapor
  E) carbon dioxide

Question 7

When extremely hazardous weather is imminent a weather ____ is issued.
 A) warning
  B) advisory
  C) watch
  D) summary
  E) heads-up

Question 8

Each time zone spans roughly ____ degrees of longitude.
 A) 5
  B) 10
  C) 15
  D) 20
  E) 25

Question 9

The international date line
 A) separates regions that have a one-hour difference on their clocks.
  B) runs roughly through a region at 180 degrees longitude.
  C) girdles the equator.
  D) runs through England.
  E) runs through New York City.