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WorksheetspH and Ocean Acidification
Total questions: 13
Worksheet time: 7mins
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
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
What is causing an increase in CO2 in the atmosphere?
Ocean acidification
Dying kelp population
Human activity (burning fossil fuels, fires, etc.)
Hunting animals
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
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
What happened to the egg's shell in the acidic solution?
It became stronger
It dissolved/ wasn't there anymore
It expanded
It stayed exactly the same
Why didn't the egg in the 8.2 solution get toxin (red food coloring) on the inside of it?
The toxins diffused into the egg
The shell protected the egg from absorbing toxins
The food coloring didn't want to go in the shell because there was a higher concentration of food coloring on the inside
What process allowed food coloring to enter the egg in the 4.6 solution?
Cell transport
Active transport
Diffusion
Transfer
