Earth is the third planet from the Sun and the largest of the four inner planets. It is mostly spherical and has one moon that orbits it counterclockwise about every 28 days. The Earth orbits the Sun in an elliptical orbit and is tilted at an axis of 23.5 degrees. Earth has a nitrogen-oxygen atmosphere that provides breathable air and protects the planet from temperature extremes and meteorites.

1. Amazing Earth

2. Earth is the third planet from the Sun
Can you name all of the planets?
Earth is the largest of the 4 inner planets
that orbit the sun.

3. Earth is almost a perfect sphere

4. One moon orbits the Earth
It takes the moon about 28 days
to orbit counterclockwise around the Earth.

5. The orbit around the sun is elliptical.
As the Earth orbits the sun, the moon
orbits the Earth.

6. Earth is tilted 23.5 degrees on its axis
Axis - an imaginary line that goes through the center of the earth from the
north pole to the south pole.

7. Earth is a unique planet
It is the only planet in our Solar System that is
known to have liquid water. It can be found in
all three states.

8. Water vs. Land on Earth
About 75% About 25%
of Earth is covered in water of Earth is land (continents)
Water versus Land
Land
Water

9. Only a small % of water is available for
humans to use and consume

10. Earth has a blanket or layer of
breathable air
This is called the atmosphere.

11. The atmosphere is made up of the
perfect mix of gases.
Nitrogen 78%
Oxygen 21%
Other gases 1%
Water vapor and dust particles are
also found in the atmosphere.

12. The atmosphere is important to us for
many reasons
• Provides oxygen which all living things need to
live

13. The atmosphere is important to us for
many reasons
• Provides oxygen which all living things need to
live.
• Protects us from most harmful UV rays from
the sun

14. The atmosphere is important to us for
many reasons
• Provides oxygen which all living things need to
live
• Protects us from most harmful UV rays from
the sun
• Keeps the Earth at temperatures that aren’t
too hot or too cold

15. The atmosphere is important to us for
many reasons
• Provides oxygen which all living things need to
live.
• Protects us from most harmful UV rays from
the sun.
• Keeps the Earth at temperatures that aren’t
too hot or too cold
• Protects us from meteorites which usually
burn up as they hit the atmosphere