1.
How many oceans and seas are there in the world?
Correct Answer
B. 18
Explanation
Oceans: Pacific, Atlantic, Indian, Southern and Arctic. Seas: Mediterranean, Caribbean, South China, Bering, Gulf of Mexico, Okhotsk, East China, Hudson Bay, Japan, Andaman, North, Red & Baltic.
2.
Which is the largest ocean?
Correct Answer
C. Pacific
Explanation
The Pacific Ocean is the correct answer because it is the largest ocean in terms of both surface area and volume. It covers more than 30% of the Earth's surface and is almost twice the size of the next largest ocean, the Atlantic Ocean. The Pacific Ocean is also known for its vastness and depth, containing the Mariana Trench, the deepest point on Earth.
3.
What is the deepest point in the Earth's oceans?
Correct Answer
A. Mariana Trench
Explanation
The Mariana Trench is the correct answer because it is the deepest point in the Earth's oceans. It is located in the western Pacific Ocean and reaches a depth of approximately 36,070 feet (10,994 meters). The trench is known for its extreme depth and has been explored by only a few expeditions due to the immense pressure and challenging conditions at such depths.
4.
The smallest of the seas, the Baltic, is how big?
Correct Answer
E. None of the above
Explanation
The Baltic Sea is 163,000 square miles.
5.
Which ocean or sea contains the most islands?
Correct Answer
D. Pacific
Explanation
The Pacific contains 20,000-30,000 islands
6.
Which country is the northern border of the Sea of Okhotsk?
Correct Answer
A. Russia
Explanation
The correct answer is Russia because the Sea of Okhotsk is bordered by Russia to the north. Russia is a country located in northeastern Europe and northern Asia, and it is the largest country in the world by land area. The Sea of Okhotsk is an arm of the western Pacific Ocean, and it is surrounded by Russia's Far Eastern Federal District.
7.
Which sea is a marginal sea?
Correct Answer
B. North Sea
Explanation
A marginal sea is a part of an ocean partially enclosed by land such as islands, archipelagos, or peninsulas. Unlike mediterranean seas, marginal seas have ocean currents caused by ocean winds. Many marginal seas are enclosed by island arcs that were formed from the subduction of one oceanic plate beneath another.
8.
Who was the first European explorer of the Gulf of Mexico?
Correct Answer
C. Amerigo Vespucci
Explanation
Amerigo Vespucci was the first European explorer of the Gulf of Mexico. He embarked on a voyage in 1497 and explored the coast of South America, including the Gulf of Mexico. Vespucci's accounts of his voyages provided valuable information about the geography and exploration of the New World. Although other explorers like Christopher Columbus and Hernan Cortes made significant voyages during the same time period, Vespucci is credited as the first European explorer of the Gulf of Mexico.
9.
Which of the oceans is the smallest?
Correct Answer
A. Arctic
Explanation
The Arctic Ocean is the smallest of the five oceans. It is located in the Northern Hemisphere and is mostly covered by ice throughout the year. The Arctic Ocean is bordered by several countries including Russia, Canada, and Greenland. It is known for its extreme cold temperatures and unique ecosystem, which includes polar bears, seals, and various species of fish. Despite its small size, the Arctic Ocean plays a crucial role in regulating the Earth's climate and is currently experiencing the effects of climate change, with melting ice and rising sea levels.
10.
Which of the seas is the largest?
Correct Answer
B. Mediterranean
Explanation
The Mediterranean Sea is the largest among the given options. It covers an area of approximately 2.5 million square kilometers, making it the largest enclosed sea in the world. It is surrounded by Europe, Africa, and Asia, and is connected to the Atlantic Ocean through the Strait of Gibraltar. The Mediterranean Sea is known for its rich history, diverse marine life, and important role in trade and transportation.