Q.1.
In which year was Earth Day celebrated for the first time?

The idea of celebrating Earth Day was born in 1970 and it was first held on 22nd April the same year.

Q.2.
Which layer in the upper part of the atmosphere prevents the sun’s harmful UV rays from reaching earth’s surface?

The harmful ultraviolet light coming from the sun is stopped from entering the Earth’s atmosphere due to a thin layer of ozone. These rays can lead to several skin diseases in people and adversely affect animals.

Q.3.
Which government agency was created on the first Earth Day?

The Environmental Protection Agency (EPA) was formed on the day the first Earth Day was celebrated in 1970. President Richard Nixon gave the proposal for its establishment.

Q.4.
What is formed when smoke reacts with industrial fog?

When smoke reacts with industrial fog, it leads to the formation of smog. Smog is a major contributor to air pollution in cities.

Q.5.
Name the gas responsible for global warming?

The main gas that is responsible for global warming is carbon-di-oxide. There has been a constant rise in the temperature of the Earth's surface due to the trapping of carbon-di-oxide.

Q.6.
Name the most abundant gas in Earth's atmosphere?

Earth’s atmosphere is filled with gases, with nitrogen being present in the largest amounts followed by oxygen as a distant second.

Q.7.
Where does Earth stand in terms of size as compared to other planets in the solar system?

In terms of size, Earth ranks fifth in order, with Jupiter being the largest of all the planets in the solar system.

Q.8.
Name the major cause for the thinning of the ozone layer?

The major cause of the depletion of the ozone layer that protects us from the harmful ultraviolet rays of the sun, is chlorofluorocarbons.

Q.9.
20% of the planet’s oxygen is produced from one region on the earth. Which region is it?

Australia,20% of the planet’s oxygen is produced from one region on earth. This region is the Amazon Rainforest, located in Brazil, South America.

Q.10.
The founder of Earth Day is a senator from which US state?

The idea of Earth Day was the brainchild of Senator Gaylord Nelson from Wisconsin in 1970. It is a day to support environmental protection.