Day and Night
Earth's Rotation:
The Earth rotates on its axis, causing only one part of its surface to face the sun at a time, experiencing daylight.
The other part, away from the sun's rays, remains in darkness.
Cycle of Day and Night:
As the Earth rotates from west to east, every region comes into sunlight at some point (sunrise) and later moves into darkness (sunset).
Sun's Role:
The sun remains stationary; the apparent movement of the sun is due to Earth's rotation.
Illusion Explained:
Similar to being in a moving train where stationary trees and houses appear to move, Earth's rotation creates the illusion of the sun "moving" across the sky.
Fig:
(a) Kuala Lumpur emerges from darkness into daylight at sun rise when the earth rotates into the sun's rays
(b) The sun is directly overhead at Kuala Lumpur or midday
(c) Kuala Lumpur passes from daylight into darkness at sunset when the earth rotates away from the sun
(d) Kuala Lumpur is directly away from the sun at mid-night