Korea’s tokamak artificial sun sets new plasma record

The video explains the tokamak, a device that recently set a world record by maintaining plasma at over 100 million degrees Celsius for 20 seconds, marking progress in nuclear fusion for clean energy. It describes the fusion process where lighter atomic nuclei combine to release energy. The video details how hydrogen isotopes are used in a tokamak to create plasma, which is confined by powerful magnetic fields to prevent it from touching the machine. The goal is to keep the plasma stable long enough for fusion reactions to occur.

What recent achievement did the tokamak accomplish?

• It created a new element.

• It was used in a space mission.

• It maintained plasma at over 100 million degrees Celsius for 20 seconds.

• It generated electricity for the first time.

In the fusion process, what happens to the atomic nuclei?

• They remain unchanged.

• They combine to form a heavier nucleus.

• They disappear.

• They split into smaller nuclei.

What is the purpose of placing hydrogen isotopes inside a tokamak?

• To generate electricity directly.

• To produce sound waves.

• To create a plasma state.

• To cool down the machine.

What is the primary function of the magnetic fields in a tokamak?

• To heat the plasma.

• To generate light.

• To confine the superheated plasma.

• To cool the machine.

Why is it important to prevent the plasma from touching the machine's walls?

• It would stop the fusion process.

• It would create a loud noise.

• It would vaporize the machine.

• It would cause the machine to overheat.