Arctic ozone loss hits new record

The video explains how UVB rays from the sun are affected by man-made ozone-depleting gases like chlorofluorocarbons. These gases break down atmospheric ozone through a two-stage reaction. An unusually cold winter in the Arctic has accelerated the activity of these gases, leading to the formation of an ozone hole five times the size of California.

What is the primary source of UVB rays?

• The moon

• The sun

• Artificial lights

• Volcanic eruptions

Which of the following is a man-made gas that contributes to ozone depletion?

• Carbon dioxide

• Methane

• Chlorofluorocarbons

• Nitrogen

What type of reaction occurs in the atmosphere due to ozone-depleting gases?

• No reaction

• Single-stage reaction

• Two-stage reaction

• Three-stage reaction

How does an unusually cold winter above the Arctic affect ozone depletion?

• It completely stops ozone depletion

• It slows down the activity of ozone-depleting gases

• It has no effect on ozone depletion

• It speeds up the activity of ozone-depleting gases

The ozone hole created due to increased activity of ozone-depleting gases is approximately how many times the size of California?

• Five times

• Three times

• Ten times

• Two times