1. The Earth
The Earth

2. Rotation of the Earth
The cycle of day and night is produced by the rotation of the Earth on its axis

3. The Earth turns on a tilted axis
This rotation causes the cycle of day and night
The cycle of the seasons is caused by the Earth’s revolution around the Sun and by the tilting of the Earth’s axis

4. The Northern and Southern Hemispheres
In the summer the Northern hemisphere is tilted toward the Sun (and so receives the Sun’s rays more directly than the Southern hemisphere)

5. What are polar auroras?
The polar auroras are caused by the solar wind. The particles are diverted toward the poles

6. Meteoroids
Meteoroids are solid debris originating from the solar system.
An asteroid originates from outside our solar system.

7. Shooting Stars
Shooting stars are meteoroids and debris that burn up when they enter the Earth’s atmosphere