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WorksheetspH and Ocean Acidification
Total questions: 15
Worksheet time: 8mins
This is a scale used to measure the acidity of a liquid.
Logarithmic Scale
Acid Scale
pH Scale
Basic Scale
If a liquid is basic, its pH is...
From 0-7
7
From 7-14
From 0-100
If a liquid is acidic, its pH is...
From 0-7
7
From 7-14
From 0-100
If a liquid is neutral, its pH is...
From 0-7
7
From 7-14
From 0-100
Which would be the strongest acid?
Lemon (pH 2.0)
Orange (pH 3.3)
Soda (2.5)
Coffee (4.5)
Which would be the strongest base?
Ammonia (pH 11)
Milk of Magnesia (pH 10)
Soapy Water (pH 12)
Tooth Paste (pH 9)
What are marine calcifiers?
Ocean animals that can walk or swim
Large ocean fish like sharks and barracudas
Fish with hard scales
Ocean animals that use calcium to make their shells and bodies
How is ocean water becoming more acidic?
Marine calcifiers are dying, making more acid
The ocean is mixing with CO2 in the air to produce acid
The ocean is getting too hot, which makes it acidic
Humans are dumping large amount of acid in the ocean
Which is an example of a marine calcifier?
Crab
Mussel
Coral
All of the above
When water mixes with CO2 in the air, this creates...
Carbonic acid
Citric acid
Lactic acid
Acetic acid
How does ocean acidification impact marine calcifiers?
It weakens their shells and bodies
It makes their food die
It makes the water too warm for them
It adds too much weight to their shells
How are humans adding CO2 to the air?
Building houses
Using fossil fuels
Causing chemical spills
Growing trees
If a liquid has a lot of H+ (hydrogen ions) it is a(n)...
Acid
Neutral substance
Base
If a liquid has a lot of OH- (hydroxide ions) it is a(n)...
Acid
Neutral substance
Base
If a liquid is neither an acid or a base, it is said to be a(n)...
Acid
Neutral substance
Base
