Exploring the Influence of Oceans on Earth's Environment

The video explains the significant role oceans play in regulating Earth's climate and ecosystems. It covers the definition of oceans, distinguishing them from seas, and introduces the concept of a single global ocean divided into five parts. The video also discusses the impact of climate change on oceans and suggests ways to mitigate these effects.

What percentage of the Earth's surface is covered by oceans?

• 80%

• 70%

• 60%

• 50%

Which of the following is NOT one of the five parts of the global ocean?

• Pacific Ocean

• Atlantic Ocean

• Mediterranean Sea

• Southern Ocean

When was the Southern Ocean officially designated as a new ocean?

• 2019

• 2020

• 2021

• 2022

What is the main difference between an ocean and a sea?

• Seas are saltwater, while oceans are freshwater.

• Oceans are saltwater, while seas are freshwater.

• Seas are larger and not surrounded by land, while oceans are smaller and partially surrounded by land.

• Oceans are larger and not surrounded by land, while seas are smaller and partially surrounded by land.

What role do ocean currents play in the environment?

• They have no significant impact on the environment.

• They decrease the Earth's temperature.

• They help in regulating temperatures and sustaining ecosystems.

• They increase the Earth's temperature.