How Does it Work? - Submarines

The video follows Sarah on her first submarine adventure, exploring the science and engineering behind submarines. It explains how submarines use buoyancy to dive and rise, the role of ballast tanks, and the propulsion system that moves the submarine. The video also covers navigation using sonar, the effects of pressure at different depths, and how submarines return to the surface. It concludes by highlighting the combination of physics, engineering, and technology that enables deep-sea exploration.

What principle allows a submarine to control whether it floats or sinks?

• Magnetism

• Inertia

• Buoyancy

• Gravity

What is the primary function of the ballast tanks in a submarine?

• To store food supplies

• To house the crew

• To control buoyancy

• To generate electricity

Which technology is used by the captain to navigate underwater and avoid obstacles?

• GPS

• Sonar

• Radar

• Infrared

What happens to water pressure as a submarine goes deeper into the ocean?

• It decreases

• It remains constant

• It increases

• It fluctuates randomly

How does a submarine become buoyant again to resurface?

• By pumping air into ballast tanks

• By using external floats

• By releasing ballast tanks

• By increasing speed