Multiple Choice
Which of the following is the primary cause of the changing seasons on Earth?
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8. Centripetal Forces & Gravitation
Newton's Law of Gravity
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Which factor is most responsible for the changes in seasons on Earth according to Newton's Law of Gravity?
A
The gravitational pull of the Moon
B
The distance between Earth and the Sun
C
The tilt of Earth's axis relative to its orbit around the Sun
D
The rotation speed of Earth
Verified step by step guidance1
Understand that the changes in seasons are primarily due to the tilt of Earth's axis, not the gravitational pull of the Moon or the distance between Earth and the Sun.
Recognize that Earth's axis is tilted at an angle of approximately 23.5 degrees relative to its orbital plane around the Sun.
Explain that this tilt causes different parts of Earth to receive varying amounts of sunlight throughout the year as Earth orbits the Sun.
During different times of the year, either the Northern Hemisphere or the Southern Hemisphere is tilted towards the Sun, resulting in longer days and more direct sunlight, which causes summer in that hemisphere.
Conversely, when a hemisphere is tilted away from the Sun, it experiences shorter days and less direct sunlight, leading to winter in that hemisphere.
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