The document discusses Earth's rotation and revolution. Earth's rotation refers to its spinning on its axis once every 24 hours, causing day and night and influencing tides, wind speed, and direction. Earth's revolution is its orbit around the sun, taking 365.25 days to complete one year. The results of revolution include seasonal variations due to changes in the Earth's position relative to the sun throughout the year, as well as solstices, equinoxes, and opposite seasons between the northern and southern hemispheres.

1. EARTH ROTATION AND REVOLUTION
Name: Janneth Hunt
Due Date : August 12, 2014
B.Ed. 3738

2. What Is Earth Rotation?
• The earth is always moving in the
solar system
• This movement is called rotation.
• Earth rotates about this axis once
each day (approximately 24 hours).

3. EARTH ROTATION

4. RESULTS OF ROTATION
Day and Night.
– As the earth rotates on the axis one
half faces the sun, this half
experiences day while the other half
experiences night.

5. High and Low tides.
• This occurs when the earth spins and the sun and the
moon pull it. One force is usually stronger than the
other

6. Wind speed and Direction
• Wind on earth comes
from different direction
(North, South, East and
West)
• Different places would get
stronger surge of wind as a
result of the earths speed
of rotation.

7. WHAT IS EARTH REVOLUTION?
• The earth's revolution refers to its movement around the sun.
while the EARTH revolves around the sun, it also rotates
about its axis thereby exposing various parts of the earth's
surface to radiation from the sun at different times leading to
different seasons for different parts of the earth' surface
• Each orbit by a member of the solar system is its revolution. A
revolution is also called a year. The Earth takes 365.25 day to
revolve around the sun

8. RESULTS OF THE EARTH’S REVOLUTION
 Seasonal variations (varying lengths of day
and night).Summer, Winter, Autumn
and Spring.
Solstices and Equinoxes

9. SOLSTICES
 The “solstice” is the day of the year when
sunlight is furthest north or south of the equator
 Our summer solstice occurs on June 21st, the
first day of summer.
 Our winter solstice occurs on December
21st, the first day of winter

10. SOLSTICE

11. EQUINOX
• The “equinox” occurs twice a year when the sun is directly
overhead at the equator
• On the equinox, the hours of daylight equals the hours of
darkness.
• Seasons in the northern & southern hemispheres are opposite

12. EQUINOX

13. ACTIVITY
What is Earth Rotation?
What is Earth Revolution?
What are the result of Rotation?
Name the results of Revolution?
What is the difference between Rotation and
Revolution?

14. THE END