This document discusses the key characteristics of planets in our solar system. It begins by stating the objectives of exploring and modeling orbits, discussing how planets orbit the sun at different rates, and understanding each planet's unique traits. It then defines the solar system and explains that planets orbit the sun. The document categorizes planets as inner or outer, and provides details about the traits of each planet, such as their composition, moons, and orbital distances from the sun. It concludes by discussing how space exploration through spacecraft and probes has increased our understanding of the planets.

1. Planets
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2. Ch.8 Lesson 6
Planets
• ( Objectives )
• The student be able to :
• 1-Explore and make a model of an
orbit.
• 2-Discuss that planets in our solar
system orbit the Sun at different rates
• 3-Understand that each planet has
unique characteristics.
• 4-Discuss various methods of space
exploration that are used by scientists
(Vocabulary):
Solar System
Planets
2

3. Ch.8 Lesson 6
Planets
• What is the solar system?
•
• Includes the Sun, nine planets,
and their moons.
(Vocabulary):
Solar System
Planets
3
Solar System

4. Ch.8 Lesson 6
Planets
• What is the solar system?
• is a huge object
• that travels around
• the sun.
• It doesn’t make its own light or
heat.
• Each planet has its own orbit or
path around the Sun.
(Vocabulary):
Solar System
Planets
4
Planet

5. Ch.8 Lesson 6
Planets
• Some planets are close to the
Sun.
• Others are far away.
• Planets closer to the Sun
have shorter orbits.
• Planets farther from the Sun
• have longer orbits.
• (it takes them more time to
travel around the Sun.)
• Q. Which planet has the
shortest orbit?
(Vocabulary):
Solar System
Planets
5

6. Ch.8 Lesson 6
Planets
• What are the planets like?
• You can’t see the planets, but they are
always in the sky.
• Scientists put planets into 2 groups.
•
(Vocabulary):
Solar System
Planets
6
Inner Planets Outer planets
Closest to the Sun Farthest from the
Sun
They are solid
balls of rocks.
They don’t have
solid surface.
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto
4 5

7. Ch.8 Lesson 6
Planets
•
(Vocabulary):
Solar System
Planets
7
1-Mercury
The closest planet to the Sun.
It is rocky and has many craters like our
moon.
2-Venus
Covered with thick yellow clouds. These
clouds trap the Sun’s heat. This make
Venus the hottest planet.

8. Ch.8 Lesson 6
Planets
•
(Vocabulary):
Solar System
Planets
8
3-Earth
The planet on which we live. It has water
and air. It has one moon.
4-Mars
Has red rocky surface.
It has two moons
Space missions traveled to Mars to look
for signs of life.

9. Ch.8 Lesson 6
Planets
•
(Vocabulary):
Solar System
Planets
9
5-Jupiter
The largest planet. It has clouds and
rings of dust. It has 28 moons.
6-Saturn
Nearly as big as Jupiter.
It has large ring made of ice.
It may have over 20 moons.

10. Ch.8 Lesson 6
Planets
•
(Vocabulary):
Solar System
Planets
10
7-Uranus
Blue-green color. It is very cold. It has
thin ring made of ice and dust. It has 20
moons.
8-Neptune
The blue planet.
It has thin ring .
It has 8 moons.

11. Ch.8 Lesson 6
Planets
•
• Q. How are the inner planets
alike?
(Vocabulary):
Solar System
Planets
11
9-Pluto
The smallest planet.
It is the coldest.
It is the longest orbit.
It is made of rocks and ice.
It has 1 moon.

12. Ch.8 Lesson 6
Planets
• How do we learn about
the planets?
• In 1957, Sputnik, the first
spacecraft was launched.
• Then thousands of spacecraft
have traveled into space.
• 12 people have walked on the
Moon.
• People who explore space are
called astronauts.
(Vocabulary):
Solar System
Planets
12

13. Ch.8 Lesson 6
Planets
• Spacecraft called space probes.
• They teach us about the planets.
• They carry tools that help us
explore space.
(Vocabulary):
Solar System
Planets
13

14. Ch.8 Lesson 6
Planets
( Check for understanding)
1-How many planets are there in
our solar system?
2-Which planet has the shortest
orbit? The longest orbit?
3-What are some ways to learn
about space ?
(Vocabulary):
Solar System
Planets
14