Oceans of the World

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

• 50%

• 65%

• 72%

• 80%

Which ocean is the largest in the world?

• Atlantic Ocean

• Indian Ocean

• Pacific Ocean

• Arctic Ocean

What is the name of the deepest known point on Earth, located in the Pacific Ocean?

• Puerto Rico Trench

• Challenger Deep

• Java Trench

• Eurasian Basin

Which ocean serves as the largest breeding ground for the humpback whale?

• Pacific Ocean

• Atlantic Ocean

• Indian Ocean

• Southern Ocean

Which oceans does the Antarctic Ocean touch?

• Pacific, Atlantic, and Arctic Oceans

• Pacific, Atlantic, and Indian Oceans

• Indian, Arctic, and Southern Oceans

• Atlantic, Indian, and Southern Oceans

Why is the Southern Ocean considered the coldest ocean?

• It is located near the equator.

• It is surrounded by warm currents.

• It is covered by a large ice sheet.

• It has many active underwater volcanoes.

What characteristic describes the Arctic Ocean?

• It is the largest ocean and has many islands.

• It surrounds the South Pole and is mostly land.

• It surrounds the North Pole with no land, only ice and ocean water.

• It is the warmest ocean due to volcanic activity.

What is a significant problem currently affecting the world's oceans?

• Increasing volcanic activity.

• Formation of floating islands of trash.

• Rapid growth of coral reefs.

• Decrease in marine mammal populations due to natural causes.