How Well Do You Know the Oceans?

What do we know about the oceans? They are large, salty, there are four of them, many ships travel across them, and they strongly affect the climate. But that is not everything students learn in Grade 7 geography about the world's oceans. Students should also remember that the ocean covers 70% of Earth's surface and is part of the hydrosphere. In addition to affecting the climate, the ocean plays an important role in the economy, because 90% of world trade takes place by ocean transport. An even more amazing fact is that the world ocean is still a mystery to scientists. You may ask: Why? Because it has not been studied enough. There is still so much of interest hidden in it: its flora and fauna, and the chemical composition of deep waters. That is why it is so important to know the basics of this topic and take geography quizzes. Who knows, maybe you will make a new discovery. To review and strengthen your knowledge, we suggest taking a quiz on the topic “Oceans.” How well do you know it?