Earth as a Planet- Grd 9

How can you prove that the earth is a sphere by looking at the Pole Star?

Briefly describe the shape of the Earth?

What is the Earth's mean temperature? State its one advantage.

Why is the earth called a watery planet?

What is biosphere?

Give any two features of the earth that make it a 'Unique Planet'.

Name the conditions necessary for life on earth.

Describe the role of Atmosphere in making earth a habitable planet.

Describe the role of water in making earth a habitable planet.

Describe the role of Temperature in making earth a habitable planet.