Global Warming Flashcards
What are fossil fuels primarily composed of?
Carbon and hydrogen.
True or False: Fossil fuels are a renewable energy source.
False.
Fill in the blank: The main types of fossil fuels are _____, coal, and natural gas.
oil
Which gas is a significant greenhouse gas emitted by burning fossil fuels?
Carbon dioxide (CO2).
What is the primary energy source used in Hong Kong?
Natural gas.
Multiple choice: Which of the following is NOT a renewable energy source? A) Solar B) Wind C) Coal D) Hydro
C) Coal.
What cycle describes the movement of carbon through the Earth’s systems?
The carbon cycle.
True or False: Renewable energy sources produce greenhouse gases during their operation.
False.
Fill in the blank: The process of photosynthesis helps to reduce _____ in the atmosphere.
carbon dioxide.
What percentage of global energy consumption is derived from fossil fuels?
Approximately 80%.
Multiple choice: Which of the following is a consequence of increased greenhouse gas emissions? A) Global warming B) Decreased biodiversity C) Ocean acidification D) All of the above
D) All of the above.
What is the main purpose of renewable energy sources?
To provide sustainable energy with minimal environmental impact.
True or False: The carbon cycle is a closed system.
True.
Fill in the blank: _____ energy is derived from natural processes that are continually replenished.
Renewable.
Which fossil fuel is primarily used for electricity generation?
Coal.
What is one major benefit of using clean energy sources?
Reduction of air pollution.
Multiple choice: Which of the following is a renewable source of energy? A) Natural gas B) Solar C) Oil D) Nuclear
B) Solar.
What role do trees play in the carbon cycle?
They absorb carbon dioxide during photosynthesis.
True or False: Natural gas is considered a cleaner alternative to coal.
True.
Fill in the blank: The greenhouse effect is caused by _____ gases trapping heat in the atmosphere.
greenhouse.
What is a significant challenge of transitioning to renewable energy?
Energy storage and reliability.
Multiple choice: Which of the following is a major source of renewable energy? A) Wind B) Coal C) Oil D) Natural gas
A) Wind.
What is the term for the process of converting sunlight into energy?
Solar energy conversion.
True or False: The carbon cycle includes both natural and human-induced processes.
True.
