Geography

1. Rotation of the Earth
• Understanding the Spinning Motion of Our
Planet

2. Introduction
• Earth performs two main motions: rotation
and revolution.
• In this presentation, we will focus on rotation.

3. What is Rotation?
• Rotation is the spinning of Earth on its axis.
• Earth rotates from west to east.
• One complete rotation = 24 hours (1 day).

4. Earth's Axis
• The axis is an imaginary line passing through
the North and South Poles.
• It is tilted at 23.5°.
• Responsible for day and night cycles.

5. Direction and Speed
• Direction: Counterclockwise (from above the
North Pole).
• Speed: Approximately 1,670 km/h at the
equator.

6. Effects of Rotation
• • Day and Night
• • Sunrise and Sunset
• • Coriolis Effect
• • Time zones

7. Day and Night Cycle
• As Earth rotates, different parts face the Sun.
• Facing the Sun = Day
• Facing away = Night.

8. Time Zones
• Earth is divided into 24 time zones.
• Each time zone covers 15° of longitude.
• Based on Earth's 360° rotation in 24 hours.

9. Coriolis Effect
• Caused by Earth's rotation.
• Deflects winds and ocean currents.
• Right in the Northern Hemisphere, left in the
Southern Hemisphere.

10. Fun Facts
• • Earth's rotation is gradually slowing (~1.7
milliseconds per century).
• • The Moon's gravity affects rotation (tidal
locking).

11. Summary
• • Earth rotates on its axis every 24 hours.
• • Causes day/night and time zones.
• • Affects climate, weather, and life patterns.

12. Questions
• 1. What causes day and night?
• 2. How long does one rotation take?
• 3. In which direction does Earth rotate?

13. Thank You!
• Feel free to ask questions or share your
thoughts!