The Ozone Layer and Greenhouse Effect

Based on the video this refers to a region of Earth's stratosphere that absorbs most of the Sun's UV radiation.

The video mentioned that the ozone layer was discovered by the French physicists Charles Fabry and Henri Buisson. What year was this?

In the 1970s, scientists noticed that the ozone layer in the stratosphere was thinning.

Over what continent was this observed?

A group of chemicals called ________________, were once commonly used in air conditioners, in aerosol spray cans, and for cleaning machine parts. These chemicals deplete the ozone layer causing most of the ultraviolet rays to get through.

The process of the trapping of heat by gases in the atmosphere.

These are all naturally occurring greenhouse gases EXCEPT:

• water vapor

• carbon dioxide

• nitrous oxide

• chlorofluorocarbon

In 2000, scientists have observed that there was a 15% increase in the amount of ______________ in the atmosphere.

The increasing level of Greenhouse effect has alarmed the world.

Choose from the following its global effect.

• Global cooling leading to another ice age.

• Melting of polar ice caps.

• Warming oceans resulting to more powerful storms.

• Decreasing sea levels due to higher temperatures.

The greenhouse effect is worsening due to several causes.

Select from the following activities its causes as explained in the video.

• Burning of fossil fuels (petroleum, coal)

• Increase CO2 emissions (cars, factories)

• Deforestation

• More agriculture lands and lessening industrialization.

There is an increasing threat of worsening global conditions due to greenhouse effect.

Select from the following the correct actions we can do to help.

• Reduce, Reuse, Recycle.

• Buy Energy-Efficient Products.

• Plant a Tree.

• Use more air conditioning to cool down the environment.