Marine Ecosystem Modifications Assessment

The video tutorial guides students through creating a marine model to explore the impact of human activities like pollution and runoff on ocean systems. It begins with an introduction and purpose, followed by a list of materials and setup instructions. The initial conditions of the model are described, including temperature and pH levels. Students then add elements like fish and factories to the model. The system is modified with pollutants and fertilizers, and observations are made on the changes in the ecosystem, such as increased pollution and temperature, and the absence of fish.

What is the main purpose of creating the marine model in the video lab?

• To identify different species of fish

• To measure the depth of the ocean

• To explore human impact on ocean systems

• To study the natural ocean currents

Which of the following is NOT listed as a material needed for the lab?

• Paint tray

• Thermometer

• Plastic bottle

• Permanent marker

Before human modification, what was the pH level of the water in the model?

• 8.0

• 7.3

• 6.5

• 7.0

What does the blue food coloring represent in the marine model?

• Fish

• Pollution

• Rain

• Acid

What is the role of vinegar in the marine model?

• To clean the water

• To represent ocean acidification

• To simulate rain

• To act as a fertilizer

Which element was added to represent nitrogen fertilizer in the model?

• Drink mix

• Vinegar

• Chocolate syrup

• Blue food coloring

After modifications, what was the new temperature of the water in the model?

• 74 degrees

• 76 degrees

• 79 degrees

• 81 degrees

What happened to the fish in the ecosystem after the modifications?

• They changed color

• They increased in number

• They remained the same

• They were removed due to pollution

What was the change in sea level after the modifications?

• It remained the same

• It increased by half an inch

• It decreased by an inch

• It increased by an inch

What was the overall condition of the ecosystem after the modifications?

• Pristine and healthy

• Partially polluted

• Completely polluted

• Improved and clean