Question

Name the following.

1. Domain of the earth _________________________________
2. Any three deserts in Africa __________________________
3. Continents lying only in the Northern Hemisphere ________________________
4. Major oceans _______________________
5. Gases found in the atmosphere ____________________

Answer 1

1. The domain of the Earth represents three states of matter, which are as follows:

• Lithosphere
• Hydrosphere
• Atmosphere

2. Desert is the region that receives scanty rainfall and has low humidity. Following are the deserts in Africa:

• The Kalahari
• The Sahara
• The Namibian Desert

3. The land mass of the Earth is not evenly distributed. Some continents are located in the Northern Hemisphere and some in the Southern Hemisphere. The continents lying only in Northern Hemisphere are as follows:

• Asia
• Europe
• North America

4. Seventy-one percent of the Earth's surface is covered with water. The names of the major oceans are as follows:

• Pacific Ocean
• Atlantic Ocean
• Arctic Ocean
• Indian Ocean

5. The cover of air that extends to a height of around 1,600 kilometres is known as the atmosphere. The composition of the gases in the atmosphere is as follows:

• Nitrogen - 78%
• Oxygen - 21%
• Argon - 0.93%
• Carbon dioxide - 0.03%
• Water vapour
• Others gases like argon, helium and ozone