The saltiness of the ocean or its salinity is fairly stable at about 35 parts per thousand To give you a sense of how much salt that is it is estimated that if you took all the salt out of the ocean and spread it over the land the salt would form a layer more than ID: 620294
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Slide1
Why are oceans SALTY?Slide2
The saltiness of the ocean, or its salinity, is fairly stable at about 35 parts per thousand. To give you a sense of how much salt that is, it is estimated that if you took all the salt out of the ocean and spread it over the land, the salt would form a layer more than _________feet
?
0.5 feet
5 feet
50 feet
500 feetSlide3
The saltiness of the ocean, or its salinity, is fairly stable at about 35 parts per thousand. To give you a sense of how much salt that is, it is estimated that if you took all the salt out of the ocean and spread it over the land, the salt would form a layer more than _________feet
?
0.5 feet
5 feet
50 feet
500 feetSlide4
500 feet of salt would cover everything around except the
tip of our two tallest buildings in downtown Charlotte.Slide5
500 feet of salt would cover everything around except the
tip of our two tallest buildings in downtown Charlotte.Slide6
Where did all this salt come from?
IS SALT THE SOLUTE or the SOLVENT?Slide7
Where did all this salt come from?
IS
SALT THE SOLUTE or the SOLVENT?Slide8
Salts are a product of ACIDS and BASES chemically reacting with each other!Slide9
Vinegars, fruits, sour milk, stomach juices, urine, alcohols, soft drinks…
REACTING WITH…
Ammonias and bleach, soaps, chalk, baking sodaSlide10
Salts are everywhere in our crust…
Here, elephants dig in Africa for salts
https://www.youtube.com/watch?v=-
PS77oxWur4
https://www.youtube.com/watch?v=_
kKI_4hv0c4Slide11
SALTS (like
NaCl
) are often formed from metals in the first or second column combined with elements from the 17th column.Slide12
Common salts….Slide13
Why are oceans SALTY?
???Slide14
Why are oceans SALTY?
Eroding salty land
…these solutes dissolve in our UNIVERSAL SOLVENTSlide15Slide16
But HOW did the EARTH get salty though???Slide17
How did the EARTH get salty though???
An erupting volcano will release gases, tephra, and heat into the atmosphere. The largest portion of gases released into the atmosphere is water vapor. Other gases include carbon dioxide (CO
2
), sulfur dioxide (SO
2
), hydrochloric acid (
HCl
), hydrogen fluoride (HF), hydrogen sulfide (H
2
S), carbon monoxide (CO), hydrogen gas (H
2
),
ammonia (NH
3
),
methane (CH
4
), and SiF
4
. Some of these gases are transported away from the eruption on ash particles while others form salts and aerosols. Slide18Slide19
How did the EARTH get salt though???
An erupting
volcano
will release gases, tephra, and heat into the atmosphere. The largest portion of gases released into the atmosphere is water vapor. Other
gases
include carbon dioxide (CO
2
), sulfur dioxide (SO
2
), hydrochloric acid (
HCl
), hydrogen fluoride (HF), hydrogen sulfide (H
2
S), carbon monoxide (CO), hydrogen gas (H
2
),
ammonia (NH
3
),
methane (CH
4
), and SiF
4
. Some of these gases are transported away from the eruption on ash particles while others
form salts
and aerosols. Slide20
Why are oceans SALTY?
ERODING SALTY LAND
????????
…
dissolved in water…the UNIVERSAL SOLVENTSlide21
Why are oceans SALTY?
ERODING SALTY LAND
VOLCANIC EMISSIONS
…
dissolved in water…our UNIVERSAL SOLVENT
…
volcano gases can form SALTSSlide22
Why are oceans SALTY?
ERODING SALTY LAND
VOLCANIC EMISSIONS
??????
…
dissolved in water…our UNIVERSAL SOLVENT
…
volcano gases can form SALTS over BILLIONS of yearsSlide23
A drop
of
salty water will remain in a LAKE for around 200 years. On the other hand, a salty water drop
may remain in the
OCEAN
for 100-200
MILLION
years.Slide24
A drop of salty water will remain in a LAKE for around 200 years. On the other hand, a salty water drop may remain in the OCEAN for 100-200
MILLION
years.
WHY DO YOU THINK THAT IS?Slide25
Is Lake Norman just holding water or is it part of the Catawba River Basin?Slide26Slide27
Why are oceans SALTY?
ERODING SALTY LAND
VOLCANIC EMISSIONS
RUN-OFF
…
dissolved in water…our UNIVERSAL SOLVENT
…
volcano gases can form SALTS over BILLIONS of years
…
draining
down the river basin back to the oceanSlide28
move on…
http://
chemistry.about.com/od/waterchemistry/f/why-is-the-ocean-salty.htm