KNOW YOUR PLANET

Our earth is a unique planet. It is the only planet in our solar system that has water and air. Our Earth has land masses and water bodies. The large land masses are called continents. The large water bodies are called oceans.

In ancient times, people believed that the Earth was flat and had steep edges. Ferdinand Magellan, Portuguese explorer, sailed around the world and proved that the earth is round. Pictures taken from space has also proved that the earth is like a sphere. It is round, but is slightly flattened at the top and at the bottom.

To study the Earth we need it's model. A globe is a simple and accurate model of the Earth. It shows the distribution of land and water on the surface of the Earth. We can also see the correct shape, size and location of the continents and oceans on a globe. But, we cannot always use a globe to study the Earth. This is because

* a large globe is difficult to carry around.

* a globe is small and all the details of a place cannot be shown on it.

* we cannot make a globe for a part of the Earth.

* only one half of the Earth can be seen at a time on a globe.

For watching the presentation do like, share, and subscribe to Saanvi's Creations. bye friends.