The Earth

key notes :

1. Introduction to Earth:

• The Earth is the third planet from the Sun in our solar system.
• It is the only known planet to support life.

2. Earth’s Size and Shape:

• Earth is a sphere, which means it is round like a ball.
• It has a diameter of about 12,742 kilometers (7,918 miles).

3. Earth’s Layers:

• Earth has three main layers: the crust, mantle, and core.
• The crust is the outermost layer where we live.
• The mantle is beneath the crust and is very hot.
• The core is the center and is extremely hot, made mostly of iron and nickel.

4. Landforms and Water Bodies:

• Earth has various landforms like mountains, valleys, plains, and deserts.
• Water covers about 71% of Earth’s surface, including oceans, seas, lakes, and rivers.

5. Continents:

• There are seven continents on Earth: Asia, Africa, North America, South America, Antarctica, Europe, and Australia.

6. Oceans:

• There are five major oceans: the Atlantic Ocean, Pacific Ocean, Indian Ocean, Southern Ocean, and Arctic Ocean.

7. Earth’s Atmosphere:

• The Earth is surrounded by a layer of air called the atmosphere.
• The atmosphere is essential for breathing and protecting us from the Sun’s harmful rays.

8. Day and Night:

• Earth rotates or spins on its axis.
• This rotation causes day and night.
• It takes about 24 hours for Earth to complete one full rotation.

9. Seasons:

• Earth’s tilt on its axis causes the changing of seasons.
• There are four seasons: spring, summer, autumn (fall), and winter.

10. Importance of Earth:

• Earth provides us with a home, air to breathe, water to drink, and food to eat.
• We need to take care of the Earth by conserving resources and protecting the environment.

11. Fun Fact:

• The Earth is the only planet known to have life, and it’s a very special place in our vast universe.

Let’s practice!