Science Ocean Acidification Practice Quiz

Ocean acidification is occurring because the oceans are taking in large amounts of carbon dioxide or _____.

• CO3

• CO2

• H23

• H20

When the ocean becomes more acidic what happens to the pH level?

• Goes up

• Goes down

• Stays the same

• Reads at 7

Ocean acidification will weaken the shells of clams, oysters, corals, and sea urchins because there will be less carbonate ions in the water for them to make strong shells. 

• True

• False

Which free ion is responsible for making solutions acidic (hint: the H in pH)?

• Hydrogen

• Carbon Dioxide

• Carbonate

• Carbon

When carbon dioxide dissolves in water, which compound is formed?

• methane

• calcium carbonate

• carbonate

• carbonic acid

Which of the following biomes or ecosystems are good examples of carbon sinks?

• forests and tundra

• Oceans and Deserts

• Oceans and Forests

• forests and deserts

The pH of the ocean is currently 8.1, making it acidic.

• True

• False

Human-made carbon dioxide comes from the burning of fossil fuels.  Example(s) of a fossil fuel is

• oil

• natural gas

• coal

• All of the above

Ocean acidification begins with*

• pollution from ships 

• dumping toxic waste into oceans

• burning fossil fuels

• creating the dead zone

In general, which types of substances tend to be acidic?

• coffee, juices, soda pop

• cleaners, hand soap, oven cleaner, bleach