2. Hydrogen is the most abundant element in the universe and with the energy released during
fusion reactions it is able to fuse to form other atoms.
4. The four most abundant elements in the Earth are iron, oxygen, silicon and magnesium. These
1. Changes in solar radiation reaching the Earth (changes in the suns output or Earths
Changes in the fraction of solar radiation that is reflected (albedo).
Changes in the infrared radiation that is radiated back into space.
2. Milankovitch cycle
CHEM 360 Quiz 1
Jan 26, 2012
N 14, O 16, Cu 63.5, Cl 35.5, Ag 108
1. Calculate the following:
a. The molarity of a sample of freshwater that contains 10 mg/L NO3
b. The ppm concentration of Cu in a freshwater sample that contains 0.54 mM C
CHEM 360 Quiz 2
Feb. 2, 2012
C 12, H 1. Saturated partial pressure of water vapor in air at 25oC is
1. The atmospheric concentration of methane over Iowa in the summer is measured to be 9
1013 molecules per cm3. Express this co
CHEM 360 Quiz 3
Feb. 9, 2012
Atomic weight: O 16 N=6.02E23 R=0.082 atm.L/mol.K Total atmosphere mass 5.27E21 g,
average atmospheric molecular weight 29.
1. The atmospheric concentration of O3 over New York City 11 pm Feb. 8, 2012 is 1 ppbv.
The Earths Atmosphere
Figure 2.1 The earths atmosphere is subdivided vertically into four
major regions based on the air-temperature profile. The ozone layer
that protects us from the suns UV radiation is in the stratosphere.
Figure 2.2 (a) sea
Global Warming and
Figure 3.1 Variations in atmospheric carbon dioxide
concentration and air temperature over the last 160,000
Figure 3.2 Annual global mean temperatures from 1850 to present
Figure 3.3 Yearly seasonal variat
Plant Earth: Rocks,
Life, and Energy
Figure 1.1The earth seen from the surface of the moon.
Courtesy of NASA
Figure 1.2 The solar system. (a) The relative sizes of
the planets. (b) The planets in their orbits around the
Table 1.1 Important