Test: Greenhouse Effect - Class 8 MCQ

Ultraviolet radiation has higher energy levels and shorter wavelengths compared to the other options.

The normal greenhouse effect helps maintain the average temperature of the Earth to around 15 ℃, making it suitable for life as we know it.

Infrared radiations have longer wavelengths compared to other forms of radiation, such as visible light or ultraviolet radiation.

Carbon dioxide is one of the greenhouse gases present in large quantities in the Earth's atmosphere, contributing to the greenhouse effect.

Greenhouse gases are responsible for absorbing thermal infrared radiation and play a significant role in the Earth's climate system.

Burning fossil fuels releases greenhouse gases, such as carbon dioxide, into the atmosphere, contributing to the greenhouse effect.

Chlorofluorocarbons (CFCs) are potent greenhouse gases known for their high efficiency in trapping heat in the atmosphere.

Increased emission of greenhouse gases is not a natural process. It is primarily caused by human activities such as burning fossil fuels and deforestation.

CFCs are synthetic compounds, not naturally occurring, and they have been largely responsible for ozone depletion as well.

The relative contribution of greenhouse gases to total global warming can vary, but the percentage provided for N2O (nitrous oxide) is not accurate as of my last update. Please note that specific percentages may change over time due to ongoing research and changes in emissions.