Question

Temperature of the Earth due to the 'Greenhouse Effect':

• A. Increases
• B. Decreases
• C. Remains constant
• D. Keeps increasing/decreasing

Answer 1

Answer: (A)

Increases

The greenhouse effect is a natural process that warms the Earth’s surface. When the Sun’s energy reaches the Earth’s atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. Greenhouse gases include water vapour, carbon dioxide, methane, nitrous oxide, ozone and some artificial chemicals such as chlorofluorocarbons (CFCs). The absorbed energy warms the atmosphere and the surface of the Earth.