Ocean Acidification

This image demonstrates that

• There is a direct correlation with the atmospheric CO₂ and the CO₂ in seawater

• That pH of the ocean increases as the atmospheric CO₂ increases

• That there is no correlation between pH of the ocean and atmospheric CO₂

Tags

NGSS.HS-ESS2-6

As the ocean becomes more acidic, the pH of the water

• increases
• decreases

What do some marine creatures do with the carbonate ion?

• use it as a food source

• use it as a defense mechanism

• use it to build shells and exoskeletons

• use it to cool body temperatures

In a more acidic ocean, the shells of organisms do not grow as easily.

• True

• False

Tags

NGSS.MS-LS1-5

Marine organisms make their shells from calcium and

• chloride
• carbonate
• seawater

Which statement accurately describes what this graph shows?

• As pH decreases, CO₃^2- (carbonate) is less concentrated

• As pH increases, CO₃^2- (carbonate) is less concentrated

• At pH 6-9, HCO₃^- is at a low concentration

• There is no correlation between carbonate ion concentration & pH

~92% of the carbon dioxide dissolved in the ocean ends up as

• Bicarbonate

• Carbonic acid

• Carbon dioxide

• Carbonate

Tags

NGSS.HS-ESS2-6

An acidic solution has a

• low pH

• neutral pH

• high pH

• no pH

pH is an indicator of

• H⁺ concentration

• acidity

• temperature

• knowledge

The ocean's pH has gone from _____ to _____ over the last century.

• 8.1; 8.2

• 8.2; 8.1

• 5; 7

• 7; 6

Tags

NGSS.HS-ESS2-5

NGSS.HS-ESS3-5