How do volcanic eruptions affect global average temperatures on the Earth?
A) Aerosols block incoming solar radiation.
B) Ash traps heat in atmosphere.
C) Ash and aerosols block incoming solar radiation.
D) Greenhouse gases block incoming solar radiation.

Question

Quizplus · Accepted Answer

During a volcanic eruption, ash and aerosols (tiny particle emissions) are released into the atmosphere. These can block incoming solar radiation, which leads to a cooling effect on the Earth's surface. However, if there are significant amounts of greenhouse gases also released during the eruption (such as carbon dioxide), they can contribute to a warming effect on the Earth's surface. Overall, the cooling effect from the ash and aerosols tends to dominate, leading to a temporary dip in global average temperatures.

How Do Volcanic Eruptions Affect Global Average Temperatures on the Earth