Ocean acidification

Ocean acidification begins with 

• pollution from ships
• carbon dioxide released from combustion
• dumping of waste from cities into the ocean

Tags

NGSS.HS-ESS2-6

Carbon dioxide and seawater combine to form

• calcium carbonate
• carbon monoxide
• carbonic acid 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Marine organisms make their shells from calcium and

• chloride
• carbonate
• seawater

An example of a marine organism that needs calcium carbonate 

• a crab
• a shark
• an octopus

Very slight increases in the acidity of seawater __________  marine organisms that make shells.

• doesn't bother
• has no effect on 
• is unhealthy and stresses

Tags

NGSS.MS-LS2-4

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

• increases
• decreases

Tags

NGSS.MS-PS1-2

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

The pH scale is a range from:

• 1-7
• 0-14
• 1-14
• 1-20

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water