SOLAR SYSTEM TEST

The Sun is a star of the Milky Way’s galaxy.

In our solar system there are 8 planets orbit around the Sun.

THE EARTH MOVEMENTS

ROTATION: The Earth spins on its axis.

It takes 24 hours.

It produces the DAY/NIGHT

REVOLUTION: The Earth orbits the Sun.

It takes 365 days and 6 hours.

It produce the SEASONS because the Earth is TILT

1- Winter is colder because the North Pole tilts away from the Sun.

It is summer in the South Hemisphere.

2- On the spring and autumn equinoxes (equal night) Northern and 

Southern Hemispheres receive equal amount of sunlight.

3- In Summer, the day is longer and warmer. It is because the 

North Pole is tilting towards the Sun.

In the Southern Hemisphere it is winter.

PHASES OF THE MOON

The Moon orbits the Earth. It takes 28 days.

Depending on the position of the Earth, we see different lunar 

phases.

TIDES

Tides are the rise and fall of the seas and oceans.

They are caused by the gravitational force of the Moon.

It rises and falls every 6 hours, so there are two high tides and two 

low tides every day.

HEMISPHERES, LATITUDE AND LONGITUDE

In some maps there are some imaginary lines that help us locate 

things in it.

• The horizontal lines are parallels.
• The vertical lines are meridians.

The latitude of a place is its distance from the Equator.

The Equator is 0º latitude.

The longitude of a place is its distance from the Greenwich

 Meridian.

Greenwich Meridian is 0º longitude.