If oxygen means fire, how do we get it on airplanes? #shorts #science #SciShow

The video explains how emergency oxygen masks on airplanes work without storing oxygen. Instead, they use chemical oxygen generators that produce oxygen on demand. The process is initiated by pulling the mask, which triggers a chemical reaction to generate oxygen. This reaction involves sodium chlorate decomposing into oxygen and other byproducts. The oxygen supply lasts about 30 minutes, sufficient for emergency descent and landing.

Why don't emergency oxygen masks on airplanes store oxygen directly?

• They are too heavy to store.

• They are connected to chemical oxygen generators.

• They are too expensive to maintain.

• They are not safe to use.

What action is required to start the oxygen flow in an emergency mask?

• Press a button on the mask.

• Blow into the mask.

• Shake the mask vigorously.

• Pull the mask towards you.

What is the role of the spark in the oxygen generator?

• It signals the end of oxygen supply.

• It starts the chemical reaction to produce oxygen.

• It alerts the crew of an emergency.

• It cools down the generator.

What is one of the byproducts of the chemical reaction in the oxygen generator?

• Water vapor

• Table salt

• Carbon dioxide

• Nitrogen

How long do the oxygen generators typically provide oxygen?

• 10 minutes

• 30 minutes

• 1 hour

• 2 hours