Understanding Global Warming

The video discusses the role of greenhouse gases like carbon dioxide, methane, and nitrous oxide in global warming. It highlights human activities such as deforestation and emissions from vehicles and factories that increase these gases. The video explains how the thickening layer of greenhouse gases traps more heat, leading to a rise in Earth's average temperature, known as global warming. It emphasizes the importance of taking steps to reduce global warming, such as planting trees, recycling, conserving energy, and spreading awareness.

Which gases are primarily responsible for the greenhouse effect?

• Oxygen and nitrogen

• Carbon dioxide, methane, and nitrous oxide

• Hydrogen and helium

• Argon and neon

What is one major source of increased carbon dioxide levels?

• Ocean currents

• Solar flares

• Volcanic eruptions

• Smoke from vehicles

How do trees help in maintaining the carbon dioxide balance?

• By producing methane

• By releasing oxygen

• By absorbing carbon dioxide

• By providing shade

What is a direct consequence of deforestation?

• Decreased oxygen levels

• Increased rainfall

• More wildlife habitats

• Imbalance in carbon dioxide levels

What happens when the layer of greenhouse gases becomes thicker?

• It becomes less dense

• It cools the earth

• It traps more heat

• It reflects more sunlight

What is one effective way to reduce global warming?

• Plant more trees

• Cut down more forests

• Use more fossil fuels

• Increase industrial production

Which of the following actions can help in reducing energy consumption?

• Leaving lights on

• Ignoring energy-efficient devices

• Running appliances continuously

• Using less hot water