Greenhouse Gases and Climate Change

The video provides an introduction to the greenhouse effect, explaining how it traps heat within a greenhouse and similarly on Earth. It discusses the role of greenhouse gases like carbon dioxide, water vapor, and methane in trapping heat and contributing to global warming. The video also highlights the natural and human-induced causes of climate change, such as burning fossil fuels, deforestation, and permafrost thawing, and their potential impacts on the planet.

What is the primary function of the glass in a greenhouse?

• To allow plants to grow

• To trap shortwave energy

• To trap longwave infrared energy

• To block ultraviolet rays

Which of the following is NOT a greenhouse gas?

• Carbon dioxide

• Oxygen

• Methane

• Water vapor

Why does Mercury experience extreme temperature fluctuations?

• It is too far from the Sun

• It has a thick atmosphere

• It has no atmosphere

• It is too close to the Sun

What is the main source of man-made carbon dioxide?

• Volcanic eruptions

• Deforestation

• Burning fossil fuels

• Breathing by humans and animals

Which greenhouse gas is released by rice cultivation?

• Carbon dioxide

• Methane

• Nitrous oxide

• Water vapor

What is the effect of deforestation on climate change?

• It has no effect

• It reduces carbon dioxide levels

• It increases oxygen levels

• It releases stored carbon

What is permafrost and why is it significant in climate change discussions?

• A layer of ice that reflects sunlight

• A type of frost that forms in winter

• Frozen ground that releases methane when thawed

• A type of soil that absorbs carbon dioxide

How does increased farming contribute to climate change?

• By increasing water vapor

• By increasing methane emissions

• By reducing greenhouse gas emissions

• By decreasing oxygen levels

What is the relationship between the thickness of the greenhouse gas layer and global warming?

• Thicker layers trap more heat

• Thicker layers allow more heat to escape

• Thicker layers have no effect

• Thicker layers reduce global warming

What recent discovery has alarmed scientists regarding climate change?

• Increased ocean currents

• Decreased volcanic activity

• Thawing permafrost releasing methane

• Increased solar activity