1. The Earth Distance from Sun 149,669,000km
The only known planet that life exist.
Has water
Has oxygen
Average Temperatures are tolerable for life to exist.

3. Effect of difference of distance from the sun between the equator and poles is minimal, compared to the difference of angle at which sunlight is received

4. Atmosphere

5. Sun-Earth Relationship

6. Even more angled! = even larger surface area = more spread out

7. Angle of the Sun’s rays and its effect on the amount of heat absorbed by the different parts of the Earth
More or less overhead Sun’s rays
at the Equator
Low angle of Sun’s rays at the Tropic of Cancer
Effect on temperature by the heat energy absorbed by the Earth?
Effect on temperature by the heat energy absorbed by the Earth?
Heat energy is spread out over smaller surface area – more heat absorbed per unit square – Earth is overall hotter
Heat energy is spread out over larger surface area – less heat absorbed per unit square – Earth is overall cooler

10. Tilted Axis of the Earth

11. Is the Earth tilted at its axis?
Line of Axis

12. Has the tilt of the Earth have an influence on the amount of heat absorbed by the Earth?

13. Is the Earth tilted at its axis?
Line of Axis
Series of hottest areas on Earth over half a year

14. [ML101 NOT] Has the tilt of the Earth have an influence on the amount of heat absorbed by the Earth?
DARKNESS

15. [ML101 NOT] Has the tilt of the Earth have an influence on the amount of heat absorbed by the Earth?

16. Rotation of the Earth about its tilted axis of 23.5o
The rotation of the Earth causes : Day and Night

17. The Latitudes North Pole 90oN 66.5oN 23.5oN 0o 23.5oS 66.5oS
Sun’s rays
South Pole 90oS

18. 2 Movements of the Earth Rotation about its tilted axis (23.5o)
Revolution of the Earth around the Sun.
What do these 2 movements together lead to?

19. 2 Movements of the Earth Rotation about its tilted axis (23.5o)
Revolution of the Earth around the Sun.
What do these 2 movements together lead to?
Day/Night
Differring Seasons How?

20. Seasons Rotation of Earth about its tilted axis (23.5o)
Revolution of the Earth around the Sun…
…lead to unequal distribution of heat at different parts of the world at different times of the year
Therefore, Differring Seasons

21. Differing lengths of Day and Night
24 hours Night B
Longer Night
Sun’s rays
Day
Nightt
Equal length of Day and Night C
24 hours Day D
Longer Day E

22. The Revolution of the Earth about its tilted axis and the 4 Seasons
Mar 21
Dec 22
June 21
Sept 23

23. Can you explain the seasons?