The Ocean Issues in Science

Description: This quiz covers a range of issues related to the ocean, including pollution, climate change, and overfishing. Test your knowledge and understanding of these important topics.
Number of Questions: 14
Created by:
Tags: ocean pollution climate change overfishing marine conservation
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What is the primary source of plastic pollution in the ocean?

  1. Industrial waste

  2. Agricultural runoff

  3. Littering

  4. Shipping and fishing activities


Correct Option: D
Explanation:

Shipping and fishing activities contribute significantly to plastic pollution in the ocean, as plastic waste from these industries is often discarded or lost overboard.

How does ocean acidification impact marine life?

  1. It weakens the shells of marine organisms.

  2. It disrupts the ocean's food chain.

  3. It leads to coral bleaching.

  4. All of the above


Correct Option: D
Explanation:

Ocean acidification has a range of negative impacts on marine life, including weakening the shells of marine organisms, disrupting the ocean's food chain, and leading to coral bleaching.

What is the main cause of overfishing?

  1. Increased demand for seafood

  2. Destructive fishing practices

  3. Climate change

  4. Pollution


Correct Option: A
Explanation:

The primary cause of overfishing is the increasing demand for seafood, driven by population growth and changing dietary preferences.

What is the term for the process by which coral reefs lose their vibrant colors and turn white?

  1. Coral bleaching

  2. Coral disease

  3. Coral starvation

  4. Coral death


Correct Option: A
Explanation:

Coral bleaching is the process by which coral reefs lose their vibrant colors and turn white due to stress factors such as elevated water temperatures or pollution.

What is the largest marine protected area in the world?

  1. Great Barrier Reef Marine Park, Australia

  2. Papahanaumokuakea Marine National Monument, USA

  3. Ross Sea Marine Protected Area, Antarctica

  4. Phoenix Islands Protected Area, Kiribati


Correct Option: C
Explanation:

The Ross Sea Marine Protected Area in Antarctica is the largest marine protected area in the world, covering an area of over 1.55 million square kilometers.

Which ocean current is responsible for the formation of fog along the coast of California?

  1. California Current

  2. Kuroshio Current

  3. Gulf Stream

  4. Humboldt Current


Correct Option: A
Explanation:

The California Current is responsible for the formation of fog along the coast of California due to its cold, nutrient-rich waters that create a temperature difference with the warmer air above.

What is the term for the process by which ocean water becomes warmer and less dense?

  1. Ocean acidification

  2. Ocean warming

  3. Ocean stratification

  4. Ocean circulation


Correct Option: B
Explanation:

Ocean warming refers to the increase in the temperature of ocean water, primarily due to the absorption of heat from the atmosphere.

What is the name of the phenomenon where large amounts of dead fish wash ashore due to a lack of oxygen in the water?

  1. Red tide

  2. Fish kill

  3. Eutrophication

  4. Hypoxia


Correct Option: B
Explanation:

A fish kill is a phenomenon where large numbers of fish die and wash ashore due to a lack of oxygen in the water, often caused by pollution or algal blooms.

What is the term for the process by which marine organisms absorb and accumulate toxins from the environment?

  1. Bioaccumulation

  2. Biomagnification

  3. Biodegradation

  4. Bioremediation


Correct Option: A
Explanation:

Bioaccumulation refers to the process by which marine organisms absorb and accumulate toxins from the environment, such as heavy metals or pesticides, in their tissues.

Which type of fishing involves dragging a large net along the ocean floor, often resulting in bycatch and habitat destruction?

  1. Trawling

  2. Gillnetting

  3. Longlining

  4. Harpooning


Correct Option: A
Explanation:

Trawling is a fishing method that involves dragging a large net along the ocean floor, often resulting in bycatch (unintended capture of non-target species) and habitat destruction.

What is the term for the process by which marine organisms break down and recycle organic matter?

  1. Decomposition

  2. Denitrification

  3. Photosynthesis

  4. Respiration


Correct Option: A
Explanation:

Decomposition is the process by which marine organisms, such as bacteria and fungi, break down and recycle organic matter into simpler substances.

What is the name of the international agreement that aims to reduce greenhouse gas emissions and mitigate climate change?

  1. Kyoto Protocol

  2. Paris Agreement

  3. Montreal Protocol

  4. Stockholm Convention


Correct Option: B
Explanation:

The Paris Agreement is an international agreement that aims to reduce greenhouse gas emissions and mitigate climate change by limiting global warming to well below 2 degrees Celsius.

What is the term for the phenomenon where ocean currents transport heat from one region to another, influencing global climate patterns?

  1. Ocean circulation

  2. Ocean currents

  3. Ocean tides

  4. Ocean waves


Correct Option: A
Explanation:

Ocean circulation refers to the large-scale movement of ocean water, which transports heat from one region to another and influences global climate patterns.

Which type of marine pollution is caused by the discharge of untreated or partially treated sewage and wastewater into the ocean?

  1. Oil spills

  2. Plastic pollution

  3. Nutrient pollution

  4. Heavy metal pollution


Correct Option: C
Explanation:

Nutrient pollution is caused by the discharge of untreated or partially treated sewage and wastewater into the ocean, leading to an excess of nutrients that can cause algal blooms and disrupt marine ecosystems.

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