The document provides information about the solar system. It describes the 8 planets - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. It explains that planets orbit the sun, with Earth being one of 8 planets in our solar system that revolve around the sun. The planets are divided into inner and outer planets, with the inner planets being rocky and closer to the sun, and the outer planets being gas giants farther from the sun.

1. CH7Lesson2
What do you
know about our
?solar system

2. A Path
Around the
Sun

3. A planet is a large ball-shaped
body that revolves, or travels
around, the sun.
Earth is one of eight planets
.that revolve around the sun

4. orbit is the path an object takes as
it revolves around the sun.
Planets travel in an orbit that is a
.slight oval shape

5. The strong pull of the sun`s gravity
holds the planets in their orbits.
If it were not for the sun`s
gravity, Earth would move off
through space . in a straight line

6. Parts of Our
Solar System

7. There are eight planets that
revolve around the sun. many of
.these planets have moons

8. The sun
the eight planets and their
moons
other objects
that revolve around the sun make up
.the solar system
123

9. The sun is the center of the
solar system

10. Distance from
the sun

11. The solar system is a huge place.
Venus is the planet closest to
Earth. But it is about 42 million
. kilometers from Earth

12. planet Distance from sun
Mercury million km 58
Venus million km 108
Earth million km 150
Mars million 228
Jupiter million km 778
Saturn billion, 400 million km 1
Uranus billion, 900 million km 2
Neptune billion, 500 million km 4

14. The Inner
planets

15. The eight planets are divided into inner and outer planets.
The 4 inner planets
Mercury, Venus, Earth, and Mars.
They are the planets closest
to the sun.
They . all have rocky surfaces

16. Mercury
It is the closest planets to the -
sun.
-Its surface is dry and very hot.
--It is the smallest planet.
-It is less than half the size of
Earth.
. -It has no moons

17. Venus
It is the second planet from the sun-
.It is very hot and rocky-
It has craters, mountains, and -
.valleys
Thick clouds cover the planet and -
trap the sun`s energy, making it
. very hot
. It has no moons-

18. Earth
.It is the third planet from the sun-
Water covers 3/4 of Earth`s -
.surface
It is the only planet that supports -
.life
It has mild temperatures, liquid -
. water, and an atmosphere

19. Mars
It is the fourth planet from the sun-
.It is half the size of Earth-
It is called ’’red planet’’ because its -
.surface is reddish-orange
Temperatures on it are cold for -
. liquid water
.It has volcanoes and deep canyons-
.It has two moons-

20. The outer
planets

21. The 4 outer planets
Jupiter, Saturn, Uranus, Neptune.
They are huge and made of gas.
They are called gas giants.
Their surfaces are not solid.
They have thick layers of clouds
and strong winds.
They have rings around them.
Jupiter’s . rings are hard to see

22. Jupiter
It is the fifth planet from the -
sun and the largest planet.
-It is over 11 times the size of
Earth
-It is covered with thick clouds.
.-It has more than 60 moons

23. Jupiter`s Great Red Spot is a
. huge storm

24. Saturn
.It is the sixth planet from the sun-
.It is the second largest planet-
.It has more than 60 moons-

25. Saturn`s most famous feature -
is its rings.
-The rings are made of chunks of
ice and rock that circle the
. planet

26. Uranus
It is the seventh planet from the sun
.It is four times the size of Earth-
It is unlike other planets because
.It rotates on its side
.It has 27 moons-

27. Neptune
It is the farthest planet from -
. the sun
Its orbit around the sun takes -
. 165 Earth years
.It is smaller the Uranus-
.It has 13 moons-

28. Neptune`s blue color is caused
by gases in its atmosphere