science

1. The Structure of Our Solar System
Alice Wang
Wattle Grove Primary School, Year-1, Room 23

2. Introduction
A solar system consists of a star and objects that revolve
around it
Our Solar System consists of the Sun and eight known planets
and the moons that orbit those planets
The force of gravity keeps planets in orbit around the sun.

3. The Structure of Our Solar System

4. The Sun
• The sun is the star of our solar system, but it is only
one of millions of stars in the Milky Way Galaxy.
• It is over one million times larger than Earth.
• It is eight light minutes away from Earth or
92,957,000 miles.
• The temperature is 15 million degrees K. One K = 13-25
million degrees!
A *galaxy is a system containing millions of
stars held together by gravity.

5. Two
Kinds of
Planets
Planets of our
solar system
can be divided
into two very
different kinds:
Jovian (Jupiter-like)
planets: Jupiter, Saturn,
Uranus, Neptune
Inner planets
outer planets

6. What do Terrestrial
Planets Look Like
Four inner planets of the solar system
Relatively small in size and mass (Earth is
the largest and most massive)
Rocky surface
No or few moons; No rings
Mar surface
Mercury surface
Terrestrial
Planets

7. What do The Jovian Planets Look Like
Much larger in mass and size than terrestrial planets
Much lower average density
All have rings (not only
Saturn!)
Mostly gas; no solid surface
Jovian Planets

8. Craters on Planets’ Surfaces
Craters (like on our
moon’s surface) are
common throughout the
solar system.
Not seen on Jovian planets because
they don’t have a solid surface.
What do impact Craters on Earth look like

9. • Third planet from the Sun
• Only planet where life is known to exist
• Largest of the four inner planets
• 75% of the surface is covered by water
Our Beautiful Earth

10. Thanks for your attention!