Marine Science Unit 6 Test: Human Impacts 2024

Which of the following statements is TRUE regarding ocean acidification?

• Involves the increasing pH of seawater, meaning it becomes more basic
• Creatures who depend on calcium carbonate like corals and mollusks with shells are at the highest risk
• Occurs with an influx of oxygen into the water, allowing animals to breathe more
• Caused by coral bleaching and increase of plastic in the ocean

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-5

Which of the following historical events is best to blame for the increase in CO2 production, subsequently causing an increase in ocean acidification?

• Invention of the solar panel
• Industrial Revolution
• Cold War
• Invention of the electric car

Tags

NGSS.MS-ESS3-4

Mrs. Frizzle took her students on a field trip to the Great Barrier Reef. While diving along the reef, the students saw coral of all colors. The longer they swam, however, the more they came across coral that had lost its color, leaving them a pale white. Phoebe turns to her classmates and says "According to my research, these corals appear to be suffering from coral bleaching". Which of the following statements should Phoebe use to explain this phenomenon to her peers?

• The sun's rays were so intense they bleached the coral of their color
• Increasing water temperatures drove algae out of the coral's tissues causing them to lose their color and food source
• Greenhouse gases dissolved into seawater lowering the pH which killed the corals
• Chemicals leaching from plastic pollution in the ocean bleached the corals

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

True or False: A temperature change of as little as 1-2 degrees Fahrenheit can cause coral reefs to drive out algae and bleach.

• True
• False

Tags

NGSS.HS-LS4-5

Which of the following would be an appropriate solution to aid with the reversing or stopping of coral bleaching? Select two that apply!

• Use coral safe sunscreen that does not poison corals, making them less susceptible to bleaching
• Touch and remove organisms when diving or snorkeling
• Grow coral in a lab setting that could be transported to affected reefs
• Increase your consumption of plastic and burning of fossil fuels

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following statements is FALSE regarding the plastic pollution crisis in our oceans?

• Modern plastics are synthesized in such a way that they will never actually disappear from the environment but remain as microplastics
• Most plastic ends up in the oceans due to littering, improper disposal of waste and runoff of waste into rivers and other waterways
• The best way to end this crisis is to stop buying plastics; without demand there will be no supply
• Plastic pollution harms marine life by entrapment and ingestion but this issue has zero impact on human activity like tourism, commercial fishing, etc.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What is one lifestyle change you can make to aid in resolving the effects of plastic pollution on the marine organisms and environments? Select three that apply!

• Increase consumption of single use plastics
• Start using reusable glass containers
• Use silicon, glass, paper, or metal straws instead of plastic straws
• Leave your trash on the beach during your vacation
• Pick up any trash you see at the beach on your vacation

Tags

NGSS.MS-ESS3-3

Which of the following items would take the LONGEST amount of time to break down if thrown into the ocean?

• Plastic fishing line
• Cardboard
• Orange peel
• Cotton rope

True or False: Bioaccumulation is the increase in concentration of contaminants (such as microplastics) going up the food chain.

• True
• False

Tags

NGSS.MS-LS2-3

The following diagram shows a food web of a freshwater lake ecosystem. The lake is located downstream from a farm and receives runoffs of DDT, a toxic pesticide used on the farm. Which organism(s) below would you predict to have the highest levels of microplastics? Select all that apply!

• Muskrat
• Osprey
• Algae
• Tadpole
• Dragonfly nymph

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4