(Answer) Clouds typically occur in the lowest layer of Earth’s atmosphere. What’s that layer called?

[7-31-2022] Microsoft Rewards Bing Homepage Quiz Question: Clouds typically occur in the lowest layer of Earth’s atmosphere. What’s that layer called?

The given options are:

• Stratosphere
• Troposphere
• Thermosphere

Correct Answer: Troposphere

Info: The troposphere is the first and lowest layer of the atmosphere of the Earth and contains 75% of the total mass of the planetary atmosphere, 99% of the total mass of water vapor and aerosols, and is where most weather phenomena occur. From the Earth’s surface to between 5 and 9 miles up into the air, the troposphere is where much of Earth’s weather happens, so most of the clouds form there. But the rare noctilucent clouds seen in this image are way up in the mesosphere, the coldest layer of our atmosphere, about 50 miles above the surface. (Ref)

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All three questions from today’s Bing Homepage Quiz are below. You can find their answers by visiting those pages.

1. These are noctilucent clouds. What does ‘noctilucent’ mean in Latin?
2. About how much does an average cloud weigh?
3. Clouds typically occur in the lowest layer of Earth’s atmosphere. What’s that layer called?