This document discusses the elements of our galaxy, including stars, planets, satellites, asteroids, meteorites, and comets. It describes the key properties and movements of these elements. Specifically, it notes that stars are balls of fire that provide light and heat, planets orbit stars, and the most important star is the Sun. It also explains that satellites orbit planets, with the Moon orbiting Earth, and asteroids are large rocks that exist in a belt between Mars and Jupiter. Additionally, it describes the two movements of Earth: rotation on its axis creates days and nights, while revolution around the Sun creates the seasons.

1. 5 T H O F P R I M A R Y
S O C I A L S C I E N C E
THE UNIVERSE
PART 2

2. ELEMENTS OF OUR GALAXY
• STARS
• The stars are big balls of fire
• They have own light
• They give us heat
• The planets orbit around the stars
• The most important star of our galaxy is the
SUN.

3. ELEMENTS OF OUR GALAXY
• PLANETS
• The planets orbit around the Sun
• They don’t have light
• There are eight planets in the Solar System
• Mercury
• Venus
• Earth
• Mars
• Jupiter
• Saturn
• Uranus
• Neptune

4. ELEMENTS OF OUR GALAXY
• SATELLITES
• The satellites orbit around the planets.
• The satellite of our planet is the MOON.

5. ELEMENTS OF OUR GALAXY
• ASTEROIDS
• The asteroids are big pieces of rocks
• Between Mars and Jupiter there is a belt of asteroids that
differences the INNER planets from the OUTER planets

6. ELEMENTS OF OUR GALAXY
• METEORITE
• The meteorites are pieces of rocks that can impact in the Earth.
• They are smaller than the asteroids.

7. ELEMENTS OF OUR GALAXY
• COMETS
• The comets are made of ice and dust.
• When they are near to a star, the ice evaporates and we can see
like a halo of light

8. MOVEMENTS OF THE EARTH
•The Earth moves in two ways:
• Around its axis – ROTATION
• Around the sun - REVOLUTION

9. ROTATION
• The Earth moves around its axis
• It lasts 24 hours – 1 day
• It creates DAYS and NIGHTS

10. REVOLUTION
• The Earth moves around the sun
• It lasts 365 days and 6 hours – 1 year
• It creates the four seasons: SPRING, SUMMER,
AUTUMN, WINTER

11. QUESTIONS
• Which element of the Universe orbits around the
planets?
• Which element of the Universe orbits around the stars?
• Which element of the Universe are small pieces of
rocks?
• Which element of the Universe separates the inner
planets and the outer planets?
• What movement of the Earth creates the seasons?

12. ACTIVITIES
• Complete the sentences:
The name of our galaxy is _____________. We live in the
________. It is a planet, and it orbits around the
_________. The Sun is a __________. Around our
planet orbits the ________, which is a ________. The
belt of asteroids is between _________ and _________.
MARS – MILKY WAY – SATELLITE – STAR – SUN – JUPITER – EARTH – MOON

13. ACTIVITIES

14. ACTIVITIES

15. JOURNAL
• What have you learned today?
• What do you like more about Universe? Why?