Earth, Sun and Moon

The _____ is the star at the centre of our solar system and provides Earth with light and heat.

The Earth's rotation on its axis causes the phenomenon of day and _____.

It takes _____ days for the Earth to complete one revolution around the Sun.

The four seasons are due to the _____ of the Earth's axis.

The summer solstice is the _____ day of the year.

The winter solstice is the _____ day of the year.

The autumn and spring equinoxes are when Earth sees _____ hours of day and night.

The imaginary line that divides the Earth into the Northern Hemisphere and the Southern Hemisphere is the _____.

The Moon's gravitational pull is responsible for causing _____ on Earth.

The force that keeps planets in orbit around the Sun is _____.