Quiz · Why the Sky Turns Red at Sunset

Question 1What does the speaker mainly explain in this talk?

Why volcanic eruptions change the weather The physics that makes the sky look red at sunset How nitrogen and oxygen molecules are produced Why the daytime sky looks white from space

Question 2Why does a clear daytime sky appear blue, according to the talk?

The ocean reflects blue light up into the air Blue waves are longer than red and orange waves Scattered blue light reaches our eyes from every part of the sky The sun gives off more blue light at midday

Question 3According to the talk, why can sunsets stay unusually vivid after volcanic eruptions?

The eruptions heat the air and slow the sunlight down Volcanic gases turn red light into blue light The eruptions push the sun lower on the horizon Extra dust and smoke in the air scatter even more light