The video explains that greenhouse gases in the atmosphere absorb and reemit infrared radiation, contributing to the warming of the atmosphere and the planet's surface. It highlights the most significant greenhouse gases in Earth's atmosphere, which include carbon dioxide, methane, and water vapour.

What is the role of certain gases in the atmosphere regarding infrared radiation?

• They increase oxygen levels.

• They absorb and reemit infrared radiation.

• They reflect visible light.

• They block ultraviolet rays.

How do these gases affect the Earth's atmosphere and surface?

• They have no effect.

• They cause acid rain.

• They warm the atmosphere and surface.

• They cool down the atmosphere.

Which of the following is NOT a major greenhouse gas in Earth's atmosphere?

• Carbon dioxide

• Water vapor

• Methane

• Oxygen

Which gas is known for its significant role in the greenhouse effect?

• Helium

• Argon

• Carbon dioxide

• Nitrogen

What is a common characteristic of greenhouse gases?

• They are all heavier than air.

• They absorb and reemit infrared radiation.

• They are all colorless.

• They are all man-made.