SUMMARY: EARTH IS IN THE SOLAR SYSTEM.

 THE SOLAR SYSTEM

The Earth is in the Solar System.

- THE SUN: Giant ball of gases. Emit light and heat.

- PLANETS: Without own light. 

  There are 8 planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

  Travel around the sun in an orbit.

- OTHER CELESTIAL BODIES: (STARS)

Satellites: travel around a planet.

Comets: travel around the sun.

WHY ARE THERE NIGHT AND DAYS?

Because the Earth rotates on itself. (ROTATION)

It takes 24 hours = one day.

Its daytime on the side of the Earth that faces the Sun; on the other side it will be night.

THE SEASONS

The Earth travel around the Sun. (REVOLUTION)

It takes 365 days = 1 year

- WINTER: Short days. It's cold.

- SPRING: Days are longer. It's cold.

- AUTUMN: Day are shorter. It's cooler.

- SUMMER: Day are longer. It's hotter.