Multiple Choice
Which factor is a primary cause of the gravitational force between two objects according to Newton's Law of Gravity?
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8. Centripetal Forces & Gravitation
Newton's Law of Gravity
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What is the primary cause of the seasons on Earth according to Newton's Law of Gravity?
A
The rotation of Earth on its axis.
B
The gravitational pull of the Moon on Earth's oceans.
C
The varying distance between Earth and the Sun during the year.
D
The tilt of Earth's axis relative to its orbit around the Sun.
Verified step by step guidance1
Understand that the primary cause of the seasons is not directly related to Newton's Law of Gravity, but rather to the tilt of Earth's axis.
Recognize that Earth's axis is tilted at an angle of approximately 23.5 degrees relative to its orbital plane around the Sun.
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 we experience as summer.
Conversely, when a hemisphere is tilted away from the Sun, it experiences shorter days and less direct sunlight, leading to winter.
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