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Weather - High and Low Pressure - V.3

  Рет қаралды 1,757

DeverScience

DeverScience

Күн бұрын

Пікірлер: 28
@JayGee6996
@JayGee6996 7 ай бұрын
I understood your first version but they’ve got more accessible with each revision
@christopherdever5536
@christopherdever5536 7 ай бұрын
Awesome! Thanks for that encouragement. I put a lot of thought into making it more complete and understandable and it is great to hear it helps!
@esmekaffen4961
@esmekaffen4961 6 ай бұрын
Finally a clear, concise demonstration/explanation! Thank you🙏🏾
@christopherdever5536
@christopherdever5536 6 ай бұрын
You're very welcome!
@bayport-moto
@bayport-moto 6 ай бұрын
Great explainer! 💯 I'm curious tho, what is the scale of temperature differences in the atmosphere between high and low? It seems strange/counterintuitive that a hot sunny day is associated with high pressure which is "cooler" air pressing down even tho it's wicked hot out?🤔
@christopherdever5536
@christopherdever5536 6 ай бұрын
Great point. As air falls in our atmosphere it warms due to adiabatic heating. Plus the clearer skies result in more solar warming. Finally cooler air could just be marginally cooler than the surrounding air. So it is easy to confuse the cause and effect.
@426F6F
@426F6F 6 ай бұрын
Awesome presentation!
@christopherdever5536
@christopherdever5536 6 ай бұрын
Thank you kindly!
@RobertStineIsTheBest
@RobertStineIsTheBest 6 ай бұрын
Comment to support a great teacher! Thank you for explaining such a basic yet generally poorly understood subject! Cheers from Ukraine ❤️
@christopherdever5536
@christopherdever5536 6 ай бұрын
Many thanks for your support! Cheers to you also!
@Joulfreunde
@Joulfreunde 7 ай бұрын
Great visualisation and explanation! Thanks! :)
@christopherdever5536
@christopherdever5536 6 ай бұрын
Glad you liked it!
@user-nk4td9bg6w
@user-nk4td9bg6w 6 ай бұрын
very nice job! I would be extremely grateful if you could do a demonstration where you look at a weather observation map showing pressure systems and front and go through your thought process of describing how you think all of the parts work together and forecast what you think it all may look like in 6, 12, 18 hours etc based on the "rules" of how things interact together, and if the rules change for different hemispheres of the world Thanks very much!
@christopherdever5536
@christopherdever5536 6 ай бұрын
Thank you for the comment! I'm sorry to disappoint but I would be out of my depth to do such a video at this point. I'm a middle school educator and a generalist by training. I would love to see such a video however done by a trained meteorologist with extensive knowledge in the field. I tell my students that they are working on becoming "weather pros" but honestly we only cover the basics.
@dn221273
@dn221273 6 ай бұрын
Вот спасибо вам! Очень доходчиво! Вы настоящий Учитель! 👍Thank you very much! Very understandable! You are real Teacher!
@christopherdever5536
@christopherdever5536 6 ай бұрын
Thank you! Glad you found it helpful.
@asmanoj1
@asmanoj1 6 ай бұрын
Awesome 👍👍
@christopherdever5536
@christopherdever5536 6 ай бұрын
Thanks 🤗
@jeremypiles1787
@jeremypiles1787 6 ай бұрын
Nerd question. Using water currents explains the rising and falling models of hot and cold, respectively. But water doesn't change density with temperature in the same way air does, right? In larger models in our environment, what differences could we expect that we might not see in water-system demos? Thanks for the content!😊
@christopherdever5536
@christopherdever5536 6 ай бұрын
Great question! So I will link a discussion board that has some interesting stuff in it below. Here is one excerpt that caught my attention... "The thermal expansion coefficients of air and water are: Air : 0.00369 K−1 Water : 0.000214 K−1 And the specific heats are: Air : 993 J/KgK Water: 4190 J/KgK A substance with a higher thermal expansion coefficient and lower specific heat would expand in volume faster than another. We can clearly see that air expands faster because it has the ability to increase volume faster whilst taking less heat." physics.stackexchange.com/questions/715119/thermal-expansion-of-water-vs-air So it would seem to me that if we could reproduce this experiment with air (by somehow making the air visible) we would see much faster motion with similar heat input. The warm air would expand much more than water and hence rise much faster while the air that loses thermal energy would contract much faster hence fall much faster. Maybe that is why ocean currents tend to move relatively slowly and wind can often move very fast. What do you think?
@MidnightBlueMetallic
@MidnightBlueMetallic 6 ай бұрын
High Happy, Low Lousy. Got it. But is this movement between high and low pressure what causes tornadoes?
@neben
@neben 6 ай бұрын
All I can think of is the it's raining men song verse "Barometer's getting low" 😅
@dbzkings2626
@dbzkings2626 6 ай бұрын
Okay but what about deserts? This is only making the assumption that there is moister in the air. What's also confusing is when you heat a gas in a ballon, the ballon expands. Isn't that considered "high pressure?" Or when you freeze a ballon, the air constricts. I.E. low pressure? I've been having an argument that black top streets are trapping heat from the sun. Causing a "high pressure" atmosphere and thus causing climate change. The air is being heated (due to the streets) causing pressure on our dome we call the atmosphere. Thus, cloud formations can't happen because water molecules need to slow in order to become a liquid.
@christopherdever5536
@christopherdever5536 6 ай бұрын
Great questions! The high and low pressure regions are due to the density of the air. Moisture is not required for the air to heat and expand or cool and contract. So you could have a low pressure region without clouds or rain. However, more water will evaporate if available in warmer air so it regions where moisture is available you are more likely to have clouds and rain. Secondly, when you put air in a balloon there is an elastic force that "squishes" the air causing higher pressure. If the air was in a glass balloon and you heated it the pressure would definitely increase. However the atmosphere is not contained in a dome. It is held near the earth by gravity with "empty" space on the outside. Hence when the earth heats up (or the blacktop) it then heats the air above it which expands creating a low pressure region and rises. I think the main point you are confusing here is that the atmosphere is not held at a fixed volume so the dynamics of the gas are different.
@user-nk4td9bg6w
@user-nk4td9bg6w 6 ай бұрын
@christopherdever5536 You deserve at least 1 million subscribers here, thanks
@yurimolfarUA
@yurimolfarUA 6 ай бұрын
Thank you, because it did not answer on part 1 from class
@raccoons_stole_my_account
@raccoons_stole_my_account 6 ай бұрын
Comment for the algorithm.
@jeremypiles1787
@jeremypiles1787 6 ай бұрын
Ditto
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