2. Origin of our solar system
Our solar system
was a mass of
stelar dust that
started to turn
around, and
when it
concentrates, it
turns into a very
hot ball that is
the sun, a star.
The matter that
is outside forms
small balls that
are our planets.
3. In our solar system, nine planets circle around our Sun.
The Sun is in the middle while the planets travel in
circular paths (called orbits) around it
4. Inner Planets: Closest to the Sun and made of rock.
The are: Mercury, Venus, Earth and Mars.
Mercury is the smallest and nearest planet to the Sun, so it´s very
hot.
Venus is almost the same size as the Earth. It is the hottest planet.
Earth is our planet and is the largest of all the four inner planets.
5. Outer Planets.They are the farthest away from the
Sun planets, made up of gases.They are very large.
Jupiter is the
largest planet.
Uranus is
surrounded by a
small ring.
Neptune
The farthest away
and the coldest.
planet
Saturn is
surrounded by a
ring
made up of rock
and dust.
6. If we compare the size of the Sun with the sizes of
the Planets, we can see that the Sun is much bigger.
7. Asteroids are pieces of rock in the space.They
have no ice and the Comets do have ice.
8. Comets are celestial bodies made of rock and ice that
move around the space and the tail means that the
ice is melting while they travel.
9. Galaxy and Milky Way. A galaxy is made up of million
of stars. One of them is the Sun and many others
have their own system.
10. The Earth is the planet where we live. Most of The
surface is covered by water this is why is called: “
the Blue Planet”
The land is made up
with continents and
islands.
The water can be
found in the seas,
Oceans, rivers, lakes,
ponds…
The Earth is
surrounded by a layer
of air called the
Atmosphere.
11. THE MOON
The Moon is a
satellite of the
Earth. The Moon is
much smaller than
the Earth.
There are many
holes on its surface
called craters. It
does not give off
light. It looks
bright because it
reflets light from
the Sun.
12. DAY AND NIGHT
The Earth
rotation causes
the changes from
day to night. The
sun does not
move. The Earth
moves around the
Sun and on its
axis. This is
called rotation
and it takes 24
hours, one day.
13. The Earth Rotation. The Earth orbits
the Sun.
To see the Earth rotation: www.youtube.com/watch?v=8Vmmv0gOfWw
One complete
orbit takes
365 days.
This is called
an Earth
revolution or a
year.
Earth
revolution
causes the
four seasons.
14. The Sun is a star. Stars are like giant balls of fire.
Life on Earth is possible thanks to the light and heat
from the Sun
15. The Moon orbits the Earth. It takes
28 days. This is called “lunar month”
New Moon
Full
Moon
Crescent
Moon Last
quarter
First
quarter
Crescent
Moon
New
Moon
