How many oceans are there on the Earth?

How many oceans are there on the Earth?

This is like the tricky questions you got in high school. In a sense, there are two answers to this question, both of them right. Strictly speaking, there is only one ocean, a great body of saltwater, which altogether covers about 72% of the Earth’s surface and surrounds the planet’s great landmasses. … Read more

How many electrons are there in electric current?

How many electrons are there in an electric current

We can define an electric current as the flow rate of an electric charge past a certain point. This sort of current exists when we have a net flow of electric charges within a particular region. When we look at an electric circuit, we can see that the charge itself is carried … Read more