Oceanography Concepts and Issues

The video tutorial covers the salinity of oceans, factors affecting it, and the role of rivers and sea volcanoes. It explains ocean temperature variations, influenced by factors like equator proximity and ocean currents. The tutorial also delves into ocean currents, their types, and influencing factors such as wind and salinity. Finally, it highlights the resources oceans provide and the impact of pollution, emphasizing the importance of preserving ocean health.

Which of the following is NOT a factor affecting the salinity of the ocean?

• Ocean currents

• Precipitation

• Evaporation

• Solar energy

What is the average salinity of the ocean measured in parts per thousand (PPT)?

• 15%

• 25%

• 35%

• 45%

How does the temperature of the ocean vary from the equator to the polar regions?

• It remains constant

• It decreases

• It fluctuates randomly

• It increases

What is the effect of ocean temperature on the southwest monsoon in India?

• It has no effect

• It strengthens the monsoon

• It weakens the monsoon

• It causes droughts

What are warm ocean currents primarily characterized by?

• Low speed

• High salinity

• Flowing towards the polar regions

• Flowing towards the equator

Which factor does NOT influence ocean currents?

• Centrifugal force

• Wind

• Precipitation

• Ocean depth

What is one of the main resources obtained from the ocean that is crucial for energy generation?

• Sand

• Petroleum

• Salt

• Gravel

Which mineral is NOT commonly extracted from the ocean?

• Chlorine

• Fluorine

• Iodine

• Gold

What is a major environmental issue affecting oceans today?

• Coral bleaching

• Oil spills

• Plastic pollution

• Overfishing

Why is it important to prevent plastic waste from entering the ocean?

• It increases ocean salinity

• It enhances ocean currents

• It improves water clarity

• It disrupts marine ecosystems