pH and Ocean Acidification

What does the pH scale measure?

• The hydrogen (H) and hydroxide ions (OH) in a solution to determine how acidic or basic something is

• How much carbon dioxide something has

• Test how toxic a liquid is

• Tests if water is drinkable or not

What is the accurate range for the pH scale?

• 0-10

• 1-13

• 0-14

• 1-100

If something has a pH of 7, what would we consider it as?

• An acid

• Neutral

• A base

If something has a pH of 9, what would it be considered as?

• An acid

• Neutral

• A base

What happens to the organisms with shells made of calcium carbonate in the ocean when the pH level drops below its optimal pH of 8.3?

• Their shells get stronger

• Their shells start to break down and get weaker

• They die immediately

• They starve to death

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-5

What is causing the pH to drop in the oceans?

• Squid ink

• Rising CO2 levels in the atmosphere

• Kelp dying

• Acid is being dumped into the ocean

Tags

NGSS.HS-ESS2-6

What is causing an increase in CO2 in the atmosphere?

• Ocean acidification

• Dying kelp population

• Human activity (burning fossil fuels, fires, etc.)

• Hunting animals

Tags

NGSS.MS-ESS3-4

What is diffusion?

• Movement of particles from low to high concentration

• When particles do not move

• Movement of particles from areas where there is none to areas where there is a lot

• Movement of particles from high to low concentration

What is the purpose of diffusion?

• To maintain equilibrium/ homeostasis

• To create unbalance

• For particles to switch spots just because

• To separate particles from each other

Tags

NGSS.MS-PS1-4

If food coloring is added to a beaker of water and stirred around, evenly distributing the color, would it be in equilibrium?

• Yes

• No

• It was but now it's not