Multiple Choice
What causes the cycle of seasons on Earth according to Newton's Law of Gravity?
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8. Centripetal Forces & Gravitation
Newton's Law of Gravity
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Which statement supports the giant impact theory for the formation of the Moon?
A
The Moon formed from the same nebula as Earth.
B
The Moon has a similar composition to Earth's crust.
C
The Moon's orbit is perfectly circular.
D
The Moon is composed mostly of iron.
Verified step by step guidance1
Understand the giant impact theory: This theory suggests that the Moon was formed from the debris left over after a Mars-sized body collided with the early Earth.
Consider the composition of the Moon: According to the giant impact theory, the Moon should have a composition similar to Earth's outer layers, particularly the crust, because the debris from the collision would primarily come from the outer layers of Earth.
Evaluate the given statements: The statement 'The Moon has a similar composition to Earth's crust' aligns with the giant impact theory, as it suggests that the Moon formed from material ejected from Earth's outer layers.
Analyze the other statements: The statement 'The Moon formed from the same nebula as Earth' does not specifically support the giant impact theory, as it implies a different formation process. 'The Moon's orbit is perfectly circular' and 'The Moon is composed mostly of iron' do not align with the expected outcomes of the giant impact theory.
Conclude which statement supports the theory: Based on the analysis, the statement 'The Moon has a similar composition to Earth's crust' best supports the giant impact theory for the formation of the Moon.
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