How Do Submarines Work?

The video explains how submarines work, focusing on buoyancy and density principles. It describes how submarines dive using ballast tanks and return to the surface by expelling water and using compressed air. The video also highlights the role of submarines in ocean exploration, discovering various marine life forms.

What is the main reason submarines can float on the surface of the water?

How do submarines become heavier to dive underwater?

Explain the role of ballast tanks in a submarine.

Describe how scientists use submarines to explore the ocean.

What happens to a submarine when it pushes air into the ballast tanks?