The most recent warming trend experienced over the Northern Hemisphere could be the result of ____.
A) light colored particles in the stratosphere
B) increasing levels of greenhouse gases
C) a decrease in the energy emitted by the sun
D) an observed decrease in snow cover
Question 2Explain why sunrises and sunsets typically have colors of red, orange, and yellow.
Question 3Although many thousands of weather observations are taken worldwide each day, what regions still have sparse observations?
A) over high mountains and deep valleys
B) over oceans and higher latitudes
C) over oceans and high mountains
D) over higher latitudes and deep valleys
Question 4Which decade was the warmest on record?
A) 1930-1939
B) 1960-1969
C) 1990-1999
D) 2000-2009
Question 5If the amount of snow and ice in the polar regions of Earth were to decline due to global warming, how would you expect this to affect the radiation budget of Earth?
Question 6A weather watch would most likely be issued for which condition?
A) There is a chance for tornadoes today.
B) Severe thunderstorms have been spotted in the forecast area.
C) Currently, extremely high winds have been observed at mountain summits.
D) A tornado has been sighted at the outskirts of town.
Question 7Additional clouds in a warmer world could ____.
A) have a net warming effect
B) have a net cooling effect
C) have no warming or cooling effect
D) either enhance or reduce warming
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