This document provides an overview of the solar system and related vocabulary for 5th grade science. It defines key terms like sun, solar system, planet, orbit, and moon. It notes that the solar system consists of the sun and objects that orbit it, including seven major planets. It discusses how early scientists like Ptolemy incorrectly believed the Earth was the center of the universe, while later scientists like Alhazen and Copernicus correctly proposed that the Earth and planets instead orbit the sun. It also mentions that Neil Armstrong was the first person to walk on the moon.

1. SPACE AND
SOLAR SYSTEM
5TH GRADERS
2nd TERM
SCIENCE

2. What is the important vocabulary?
SUN

3. What is the important vocabulary?
SUN
SOLAR SYSTEM

4. What is the important vocabulary?
SUN ORBIT
SOLAR SYSTEM

5. What is the important vocabulary?
SUN ORBIT
SOLAR SYSTEM
PLANET

6. What is the important vocabulary?
SUN ORBIT
SOLAR SYSTEM
PLANET
MOON

7. Previous Knowledge (Vocabulary of the unit)
Sun  The star at the center of our solar system
Solar System  The Sun, the planets and objects that orbit it
Planet  A big object that orbits a star
Orbit The circular or elliptical path an object takes around another object in space
Moon A natural object that orbits a planet

8. THE SOLAR SYSTEM
The solar system is the group of planets, stars, and the Sun
The sun is the star at the centre of our solar system
The Earth is the planet that orbits the Sun

9. PLANETS
There are seven planets in our solar System:
MERCURY, VENUS, EARTH, MARS, JUPITER, SATURN, URANUS AND NEPTUNE

10. THE MOON
The MOON is a natural object that orbits a planet.
The Earth has got one moon. It takes 27 days to orbit the Earth
JUPITER for example has got four big moons and many small ones.

11. WORKING SCIENTIFICALY
HISTORY AND THEORIES OF THE SOLAR SYSTEM
2000 YEARS AGO Ptomely who was an important scientist in Egypt, observed the solar system and
developed a theory:
The Earth was the center of the Universe and The Sun and other planets orbited it.
1000 YEARS AGO Alhazen who was an arabian scientist said that Ptomely’s theory was wrong
Copernicus lived in Polland and the also criticised this theory. He said it was the Earth which rotates
the Sun as well as the other planets.

12. THE FIRST STEEP ON THE
MOONNEIL AMSTRONG was the first man travelling to the moon in