TED-Ed: How quantum mechanics explains global warming - Lieven Scheire

The video explains how carbon dioxide contributes to global warming by absorbing infrared radiation emitted by Earth. It delves into quantum mechanics to describe how gases absorb specific light colors, focusing on the electromagnetic spectrum and thermal radiation. The greenhouse effect is highlighted, showing how increased carbon dioxide levels lead to climate change.

What is the initial analogy used to explain how carbon dioxide warms the Earth?

• A rainbow

• A greenhouse glass

• An insulating blanket

• A prism

Why do gases absorb specific colors of light?

• Because they reflect all other colors

• Due to their specific energy levels

• Because they are transparent

• Due to their density

What type of light does carbon dioxide primarily absorb?

• Infrared light

• Ultraviolet light

• Visible light

• X-rays

What is the main reason Earth does not appear to be glowing?

• It absorbs all light

• It emits infrared light

• It reflects sunlight

• It emits visible light

What happens to a carbon dioxide molecule after it absorbs an infrared photon?

• It becomes transparent

• It emits visible light

• It releases a photon in a random direction

• It remains in a higher energy state permanently

What is the effect of increased carbon dioxide in the atmosphere?

• Decreased global temperatures

• Less thermal radiation

• Increased likelihood of infrared photons returning to Earth

• More visible light absorption

What is thermal radiation?

• Light emitted by objects at absolute zero

• Light reflected by shiny surfaces

• Light emitted by hot objects

• Light absorbed by cold objects