Part II. Global Warming

Front

What is global warming?

Back

Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases.

Front

What are greenhouse gases?

Back

Greenhouse gases are gases in the atmosphere that trap heat, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).

Front

How does the sun's heat distribution affect global temperatures?

Back

The sun's heat is not distributed evenly across the planet, leading to variations in temperature and climate in different regions.

Front

What is a feedback loop in the context of global warming?

Back

A feedback loop is a process where an initial change causes further changes, which can either amplify (positive feedback) or diminish (negative feedback) the original effect.

Front

What is positive feedback in climate systems?

Back

Positive feedback occurs when a change in a system causes further changes that enhance the original effect, such as melting ice reducing the Earth's albedo, leading to more warming.

Front

What is negative feedback in climate systems?

Back

Negative feedback occurs when a change in a system triggers responses that counteract the initial change, helping to stabilize the system.

Front

What role do plants play in the greenhouse effect?

Back

Plants absorb carbon dioxide during photosynthesis, which helps reduce the concentration of greenhouse gases in the atmosphere.

Front

What are the two main factors used to describe weather?

Back

Temperature and precipitation are the two main factors used to describe weather.

Front

How do volcanic eruptions affect global temperatures?

Back

Volcanic eruptions can release ash and gases that block sunlight, leading to temporary cooling of the Earth's surface.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the process by which certain gases in the Earth's atmosphere trap heat, keeping the planet warm enough to support life.