Ocean Acidification and pH Concepts

The video tutorial, led by a senior education coordinator, explains ocean acidification, its causes, and its impact on marine life. It details how carbon dioxide from burning fossil fuels is absorbed by oceans, lowering pH levels and affecting marine organisms. The tutorial includes a simple experiment using pH test strips to demonstrate acidification and suggests ways to expand the experiment. The video concludes with a call to reduce carbon emissions to protect marine ecosystems.

What is the primary cause of ocean acidification?

• Increased ocean temperatures

• Decreased sunlight reaching the ocean

• Absorption of carbon dioxide by the ocean

• Increased salt levels in the ocean

What does a pH value of 7 indicate about a solution?

• It is highly reactive

• It is neutral

• It is alkaline

• It is acidic

How does the pH scale range?

• 1 to 10

• 0 to 14

• 0 to 7

• 1 to 7

Which marine organisms are most affected by ocean acidification?

• Seaweed and algae

• Marine mammals

• Organisms with calcium carbonate shells

• Fish with scales

What happens to the availability of carbonate ions in more acidic seawater?

• It increases

• It decreases

• It remains the same

• It fluctuates randomly

What household item is used in the experiment to simulate ocean acidification?

• Salt

• Baking soda

• Lemon juice

• White vinegar

What is the initial pH of the seawater used in the experiment?

• 3

• 5

• 7

• 8

What is the purpose of using pH test strips in the experiment?

• To measure salinity

• To measure density

• To measure acidity

• To measure temperature

What is a suggested way to expand the ocean acidification experiment?

• Weighing shells before and after exposure to acidic solutions

• Testing with different temperatures

• Measuring the color change of the water

• Using different types of vinegar

Why is it important to involve students in science experiments like this one?

• To make them memorize facts

• To encourage interest in science

• To improve their math skills

• To teach them about cooking