Australian Politics Forum - How many feet above sea level….

Sophia

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How many feet above sea level….
Mar 31^st, 2025 at 9:30am

*
…..do you live?

I decided to find out because…. I was watching a cooking vid online, about bottling tomatoes and boiling in water method… when they mentioned every so many feet/metres above sea level needed longer boiling time.
Another time I watched a cooking segment from Switzerland… a railway stop high in the alps… at a restaurant… needed 10 mins extra to boil pasta water because of high altitude!

I live 450 metres above sea level!
My cook times are not as fast as sea level folk in Melbourne! Grin

450 metres the same as the place we visited last September…Santorini!
This high… in pic below!

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30452791-EDE3-4A43-8BF3-EF05D7C0BE27.jpeg (165 KB | 13 )

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Bobby. Gold Member Offline Australian Politics Posts: 111572 Melbourne Gender:	Re: How many feet above sea level…. Reply #1 - Mar 31^st, 2025 at 10:09am You silly Billy. If you put a glass of water inside a sealed glass tank and you used a vacuum pump to remove the air the water would boil at room temperature.
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Dnarever Gold Member Offline Australian Politics Posts: 59987 Here Gender:	Re: How many feet above sea level…. Reply #2 - Mar 31^st, 2025 at 10:38am Quote: How many feet above sea level…. I try to keep both of them above sea level. (some short exceptions).
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Jovial Monk Gold Member Online Dogs not cats! Posts: 49227 Gender:	Re: How many feet above sea level…. Reply #3 - Mar 31^st, 2025 at 11:14am You might need a pressure canner Lols!
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Captain Nemo Gold Member Offline Australian Politics Posts: 12205 Melbourne Gender:	Re: How many feet above sea level…. Reply #4 - Mar 31^st, 2025 at 11:34am I live in an area with an average elevation 58 m above sea level. I give rice 18 mins and dry pasta 22 mins.
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Sophia Moderator Offline Posts: 8979	Re: How many feet above sea level…. Reply #5 - Mar 31^st, 2025 at 2:26pm I’m going to experiment. I will use same pot and water and time it to boil here 450 m above sea level. Then go down to bay and do same. Just because
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Sophia

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Re: How many feet above sea level….
Reply #6 - Mar 31^st, 2025 at 2:30pm

Water boils faster at sea level (or lower altitudes) than at higher altitudes, as the boiling point is lower at higher altitudes due to reduced atmospheric pressure.
Here's a more detailed explanation:
Boiling Point and Altitude:
The boiling point of water is the temperature at which it transitions from a liquid to a gas (steam). At sea level, water boils at 100°C (212°F). However, as altitude increases, the atmospheric pressure decreases, and therefore, the boiling point of water also decreases.
Boiling Point at Higher Altitudes:
At 5,000 feet above sea level, water boils at around 203°F (95°C), and at 10,000 feet, it boils at approximately 194°F (90°C).
Why Boiling is Quicker at Sea Level:
Because water boils at a lower temperature at higher altitudes, it takes less energy (heat) to reach that lower boiling point, meaning it boils more quickly. At sea level, water needs to reach a higher temperature (100°C), requiring more energy and thus a longer time to boil.
Cooking at High Altitude:
While water boils faster at sea level, it's important to note that food takes longer to cook at higher altitudes because the lower boiling temperature means the food doesn't reach the required cooking temperature as quickly.

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Jasin Gold Member Offline Posts: 52748 Gender:	Re: How many feet above sea level…. Reply #7 - Mar 31^st, 2025 at 2:43pm When at 8000+ metres it took me ages for my coffee to come good and it got cold really quick after my first sip.
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kemal Gold Member Offline Australian Politics Posts: 606 Gender:	Re: How many feet above sea level…. Reply #8 - Jun 3^rd, 2025 at 9:15pm Jasin wrote on Mar 31^st, 2025 at 2:43pm: When at 8000+ metres it took me ages for my coffee to come good and it got cold really quick after my first sip. We went to the Sapa this year. 3400 meters above sea level. Took us 2 mins to get 2 double shot long black and only 150000 dong.
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Jasin Gold Member Offline Posts: 52748 Gender:	Re: How many feet above sea level…. Reply #9 - Jun 4^th, 2025 at 3:47pm That's a mean coffee ☕
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Bobby.

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Re: How many feet above sea level….
Reply #10 - Jun 4^th, 2025 at 4:16pm

Sophia wrote on Mar 31^st, 2025 at 2:30pm:

Water boils faster at sea level (or lower altitudes) than at higher altitudes, as the boiling point is lower at higher altitudes due to reduced atmospheric pressure.
Here's a more detailed explanation:
Boiling Point and Altitude:
The boiling point of water is the temperature at which it transitions from a liquid to a gas (steam). At sea level, water boils at 100°C (212°F). However, as altitude increases, the atmospheric pressure decreases, and therefore, the boiling point of water also decreases.
Boiling Point at Higher Altitudes:
At 5,000 feet above sea level, water boils at around 203°F (95°C), and at 10,000 feet, it boils at approximately 194°F (90°C).
Why Boiling is Quicker at Sea Level:
Because water boils at a lower temperature at higher altitudes, it takes less energy (heat) to reach that lower boiling point, meaning it boils more quickly. At sea level, water needs to reach a higher temperature (100°C), requiring more energy and thus a longer time to boil.
Cooking at High Altitude:
While water boils faster at sea level, it's important to note that food takes longer to cook at higher altitudes because the lower boiling temperature means the food doesn't reach the required cooking temperature as quickly.

You are really mixed up.

Water boils slower at sea level - it takes longer to boil.

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Carl D Gold Member Offline Australian Politics Posts: 9967 Rivervale, Perth Gender:	Re: How many feet above sea level…. Reply #11 - Jun 4^th, 2025 at 4:17pm We're about 13 meters (42 feet) above sea level here in Rivervale, Perth. https://elevationmap.net/rivervale-belmont-perth-au-1010908370 Which reminds me - see attached picture. Sorry, I couldn't resist.
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Sophia

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Re: How many feet above sea level….
Reply #12 - Jun 4^th, 2025 at 4:51pm

Bobby. wrote on Jun 4^th, 2025 at 4:16pm:

Sophia wrote on Mar 31^st, 2025 at 2:30pm:

Water boils faster at sea level (or lower altitudes) than at higher altitudes, as the boiling point is lower at higher altitudes due to reduced atmospheric pressure.
Here's a more detailed explanation:
Boiling Point and Altitude:
The boiling point of water is the temperature at which it transitions from a liquid to a gas (steam). At sea level, water boils at 100°C (212°F). However, as altitude increases, the atmospheric pressure decreases, and therefore, the boiling point of water also decreases.
Boiling Point at Higher Altitudes:
At 5,000 feet above sea level, water boils at around 203°F (95°C), and at 10,000 feet, it boils at approximately 194°F (90°C).
Why Boiling is Quicker at Sea Level:
Because water boils at a lower temperature at higher altitudes, it takes less energy (heat) to reach that lower boiling point, meaning it boils more quickly. At sea level, water needs to reach a higher temperature (100°C), requiring more energy and thus a longer time to boil.
Cooking at High Altitude:
While water boils faster at sea level, it's important to note that food takes longer to cook at higher altitudes because the lower boiling temperature means the food doesn't reach the required cooking temperature as quickly.

You are really mixed up.

Water boils slower at sea level - it takes longer to boil.

How so Bobby?

Explain this then.

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Sophia Moderator Offline Posts: 8979	Re: How many feet above sea level…. Reply #13 - Jun 4^th, 2025 at 4:52pm Carl D wrote on Jun 4^th, 2025 at 4:17pm: We're about 13 meters (42 feet) above sea level here in Rivervale, Perth. https://elevationmap.net/rivervale-belmont-perth-au-1010908370 Which reminds me - see attached picture. Sorry, I couldn't resist. Ah … ha…ha …
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Bobby.

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Re: How many feet above sea level….
Reply #14 - Jun 4^th, 2025 at 4:57pm

Sophia wrote on Jun 4^th, 2025 at 4:51pm:

Bobby. wrote on Jun 4^th, 2025 at 4:16pm:

Sophia wrote on Mar 31^st, 2025 at 2:30pm:

Water boils faster at sea level (or lower altitudes) than at higher altitudes, as the boiling point is lower at higher altitudes due to reduced atmospheric pressure.
Here's a more detailed explanation:
Boiling Point and Altitude:
The boiling point of water is the temperature at which it transitions from a liquid to a gas (steam). At sea level, water boils at 100°C (212°F). However, as altitude increases, the atmospheric pressure decreases, and therefore, the boiling point of water also decreases.
Boiling Point at Higher Altitudes:
At 5,000 feet above sea level, water boils at around 203°F (95°C), and at 10,000 feet, it boils at approximately 194°F (90°C).
Why Boiling is Quicker at Sea Level:
Because water boils at a lower temperature at higher altitudes, it takes less energy (heat) to reach that lower boiling point, meaning it boils more quickly. At sea level, water needs to reach a higher temperature (100°C), requiring more energy and thus a longer time to boil.
Cooking at High Altitude:
While water boils faster at sea level, it's important to note that food takes longer to cook at higher altitudes because the lower boiling temperature means the food doesn't reach the required cooking temperature as quickly.

You are really mixed up.

Water boils slower at sea level - it takes longer to boil.

How so Bobby?

Explain this then.

That meme is wrong.
It takes less energy to make the water boil at high altitude -
so it boils much faster than at sea level.

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