the earth 149,669,000km distance from sun 149,669,000km exist. the only known planet that life...
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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.
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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
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Atmosphere
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Sun-Earth Relationship
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Even more angled! = even larger surface area = more spread out
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Angle of the Sun’s rays and its effect on the amount of heat absorbed by the different parts of the Earth
Low angle of Sun’s rays at the Tropic of Cancer
More or less overhead Sun’s raysat the Equator
Effect on temperature by the heat energy absorbed by the Earth?Heat energy is spread out over larger surface area – less heat absorbed per unit square – Earth is overall cooler
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
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Tilted Axis of the Earth
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Is the Earth tilted at its axis?Line of Axis
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Has the tilt of the Earth have an influence on the amount of heat absorbed by the Earth?
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Is the Earth tilted at its axis?Line of Axis
Series of hottest areas on Earth over half a year
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[ML101 NOT] Has the tilt of the Earth have an influence on the amount of heat absorbed by the Earth?
DARKNESS
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[ML101 NOT] Has the tilt of the Earth have an influence on the amount of heat absorbed by the Earth?
NOT!!
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Rotation of the Earth about its tilted axis of 23.5o
The rotation of the Earth causes : Day and Night
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The Latitudes
66.5oN
23.5oN
0o
23.5oS
66.5oS
North Pole 90oN
South Pole 90oS
Sun’s rays
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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?
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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?
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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
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Differing lengths of Day and Night23.5O
Sun’s raysNighttDay
A
B
C
DE
24 hours Night
24 hours Day
Equal length of Day and Night
Longer Night
Longer Day
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The Revolution of the Earth about its tilted axis and the 4 Seasons
June 21 Dec 22
Mar 21
Sept 23
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Can you explain the seasons?
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http://www.thesourcefm.co.uk/node/597