YEAR 4 EARTH NOTES

NOTES YEAR 4 TOPIC: EARTH

UNIT 9: EARTH

Gravity of Earth is a force that pulls objects towards the centre
of Earth.

The effects of The importance of
gravitational pull on Erath’s gravity:
Earth:
1. Living things can stand and
1. Objects fall freely move around.
2. Objects remain in their
2. Ripe fruits will fall to the
position. ground

3. Water flows from higher
to lower area

Earth rotates on its axis and at the same time revolves around
the Sun in its orbit.

Rotation of Earth Revolution of Earth

 On its axis  Around the Sun in its orbit
 Direction: west to east in  Direction: west to east in

anticlockwise anticlockwise
 Duration: 24 hours or 1 day  Duration: 1 year or 3651/4
 Effect:
day
1. Occurrence of day and  Effect:
night
1. Four seasons which are
2. The Sun seems to change winter, summer, autumn
its position and fall.

3. Changes in the length and
direction of the shadow