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1. Which of the following is an example of a renewable
energy source?
a) Coal
b) Natural gas
c) Solar power
d) Oil
Answer: c) Solar power
Rationale: Solar power is generated from the sun's energy
and is considered a renewable energy source because it is
continuously replenished.
2. The greenhouse effect refers to:
a) The process of plants converting sunlight into energy
b) The trapping of heat in the Earth's atmosphere by certain
gases
c) The formation of clouds that block sunlight from
reaching the Earth's surface
d) The production of oxygen by photosynthetic organisms
Answer: b) The trapping of heat in the Earth's atmosphere
by certain gases
Rationale: The greenhouse effect is a natural process where
certain gases, such as carbon dioxide and methane, trap
heat in the Earth's atmosphere. This process is necessary
for life on Earth, but human activities have led to an
enhanced greenhouse effect, causing global warming.
3. The primary source of air pollution caused by burningÂ
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