Worksheets8.11C Humans and Oceans Systems
Total questions: 10
Worksheet time: 30mins
Which ocean activity is NOT related to survival of humans?
The oceans store solar energy that helps keep Earth warm
Marine algae produce a large percentage of the world's oxygen and absorb carbon dioxide
The oceans play an important role in global weather patterns
Oceans provide drinking water for most of the world's population
How might the information most directly affect the ocean?
Fish populations increase along the coasts
Runoff from coastal cities carries more pollutants
More artificial reefs appear off the coasts
Shark attacks decrease
Artificial reefs are manmade structures that provide surfaces for algae and other invertebrates such as barnacles, to attach. In turn, these reefs attract fish and larger predators. Which statement describes a positive effect of artificial reefs on the ocean system?
These created habitats could increase the local shark population, which might increase the number of shark attacks on humans
The increased fish population may lead to overfishing on the coasts
Materials within the artificial reef could contain toxins that damage the marine ecosystem
There is an increase in biodiversity in the ocean system
Which is NOT an example of how humans depend on ocean systems?
Climate regulation
Source for natural resources
Excess carbon dioxide production
Transportation
Humans depend on ecosystems such as the ocean for survival, yet human activities may alter the ocean system. According to research, all of the following are negative impacts of human activity on the ocean system EXCEPT -
pollution
oil rigs
species invasion
nutrient-rich water
Many people improperly dispose of motor oil. How could improper disposal of motor oil affect ocean systems?
The oil evaporates into the atmosphere and pollutes the oceans with acid rain
The oil becomes runoff pollution and flows into the oceans
The oil is absorbed by the ocean floor and can be mined again fro commercial use
The oil soaks into the ground and remains in underground aquifers
As the population continues to increase, the pressures on water resources also increase. Which is NOT a reason why an increase in human population correlates with extra pressure on aquatic ecosystems?
Overfishing
Decreased salinity in oceans
Increased numbers of vacations on cruise lines
Loss of habitat for aquatic animals
Unrestricted coastal development, pollution, and destructive fishing are some of the human activities that deplete ocean marine life. Which human activity is NOT beneficial to conservation of the ocean system?
Reduction of plastic consumption
Proper disposal of chemicals
Release of wastewater
Artificial reef programs
How have human activities modified ocean systems?
Discarded plastics can trap, suffocate, and cause gastrointestinal problems for marine life, resulting in starvation
Runoff with excessive chemicals can increase nutrients, resulting in more plant growth and reducing the dissolved oxygen content of the water
Oil from oil spills penetrates the fur and feathers of organisms, causing vulnerability to temperature changes and decreasing buoyancy in water
All of the answer choices
The table shows the numbers of fish caught by commercial fishermen near the coast of Texas. Which is the best explanation for the changes in the numbers of fish caught?
There were fewer fishermen in year 3 than in year 1
The fish populations are shrinking because of overharvesting
The fish have adapted and learned to avoid the fishermen's hooks
The fish have moved to new locations
