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Lee0110

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Posts posted by Lee0110

  1. Yes, your understanding of how helium-filled balloons work is mostly correct. As helium atoms are smaller than the molecules in air, they can slowly leak through the walls of the balloon. This results in the balloon losing some of its lifting power over time. When the pressure of the helium inside the balloon is equal to the pressure of the surrounding air, the balloon stops rising and reaches a state of equilibrium.

  2. No, the negative result of the glass greenhouse experiment does not prove that climate change is not caused by greenhouse gases. This experiment was conducted on a small scale and may not accurately reflect the complexity of the Earth's atmosphere and climate system. Climate change is a complex issue with multiple contributing factors, including greenhouse gas emissions from human activities, deforestation, changes in land use, and natural climate cycles.

  3. On 3/2/2023 at 5:43 PM, Michael McMahon said:

    Restaurant food is cooked by a professional and might always taste nicer than home food. As such ordering healthy food in restaurants would make it easier to eat healthier at home. There's no harm in the odd indulgence in fast food at restaurants. Yet ordering too many burgers at restaurants would then make fast food more tempting for home dishes. The dilemma is that restaurants can be seen as a form of recreation if someone eats out seldomly. Yet there might be more reward to choose heathy dishes from the menu for those who eat out rarely. I've tried to desensitise myself to porridge through jams and fruit by ordering it frequently for breakfast at a restaurant:

    20230302_104302.thumb.jpg.bff79f24e250a20763c140283280dc4e.jpg

    mmmm it looks so delicious. 

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