1. The Earth has gotten substantially warmer over the past 100 years.
TRUE / FALSE
2. Even if we were to immediately and permanently stabilize our carbon emissions at the current levels, or even cut these emissions substantially, climate models predict that Earth will continue to get warmer for decades.
TRUE / FALSE
3. When Mt. Pinatubo erupted in 1991, it spewed millions of tons of sulfur dioxide into the stratosphere. Scientists believe that the haze generated by the eruption reflected some of the Sun’s light, causing the Earth’s temperature to temporarily drop as a consequence.
TRUE / FALSE
4. Because the half-life of sulfur dioxide in the stratosphere is relatively short (on the order of one year), the cooling effects of the Mt. Pinatubo eruption faded within a few years.
TRUE / FALSE
5. Dark surfaces absorb more sunlight than light surfaces. Thus, all else equal, light surfaces cause less global warming because more of the sunlight that strikes these surfaces is reflected back into space.
TRUE / FALSE
