Solar and Lunar Eclipse - size of moon

In summary, the conversation discusses the diameter of the moon's and Earth's shadow during a solar and lunar eclipse. It is noted that the moon's shadow tapers 1 moon diameter on the Earth during a solar eclipse, and the Earth's shadow also tapers 1 moon diameter during a lunar eclipse. This leads to a discussion about the size difference between the Earth and moon. The question is raised as to why the Earth's shadow doesn't taper one Earth diameter, but the conversation does not provide an answer to this question.
  • #1
samona
19
0
If during a solar eclipse the moon tapers one moon diameter, wouldn't a lunar eclipse taper one Earth diameter?
 
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  • #2
hi samona

what do you mean by tapers one moon diameter ?
you do realize that the moon is a lot closer to the Earth than the sun is ?

Dave
 
  • #3
I meant the shadow of the moon tapers 1 moon diameter on the Earth during a solar eclipse. My physics book says that the Earth's shadow on the moon during a lunar eclipse also tapers 1 moon diameter.

My physics book says that if the moon's shadow tapers 1 moon diameter on the Earth during a solar eclipse, then the Earth's shadow tapers one moon diameter during a lunar eclipse. Therefore, since the Earth's shadow is 2.5 times wider than the moon, if you take into account that the Earth's shadow tapers 1 moon diameter than the Earth is 3.5(2.5 + 1) times larger than the moon.

My confusion is that if the moon's shadow tapers 1 moon diameter, why does the Earth's shadow also taper 1 moon diameter? Wouldn't the Earth's shadow taper one Earth diameter?
 

1. How does the size of the moon affect solar and lunar eclipses?

The size of the moon plays a crucial role in solar and lunar eclipses. Since the moon appears to be the same size as the sun in the sky, it can either fully or partially block the sun during a solar eclipse. Similarly, during a lunar eclipse, the moon passes through the Earth's shadow, which is much larger than the moon itself.

2. Is the size of the moon constant during all solar and lunar eclipses?

Yes, the size of the moon remains the same during all solar and lunar eclipses. However, the distance between the Earth and the moon can vary, causing the moon to appear slightly larger or smaller in the sky. This can impact the duration and visibility of an eclipse.

3. How does the size of the moon affect the duration of a solar eclipse?

The size of the moon does not directly impact the duration of a solar eclipse. However, a larger moon can block the sun for a longer period of time, resulting in a longer total solar eclipse. On the other hand, a smaller moon may only partially block the sun, resulting in a shorter eclipse.

4. Can the size of the moon affect the visibility of a lunar eclipse?

Yes, the size of the moon can affect the visibility of a lunar eclipse. A larger moon may fully block the Earth's shadow, resulting in a total lunar eclipse that is visible from more areas on Earth. A smaller moon may only partially block the Earth's shadow, resulting in a partial lunar eclipse that is less visible.

5. How does the size of the moon impact the gravitational pull during an eclipse?

The size of the moon does not significantly impact the gravitational pull during an eclipse. The gravitational pull of the moon on the Earth remains relatively constant, regardless of its size. However, the alignment of the moon, Earth, and sun during an eclipse can result in slightly stronger or weaker gravitational pull at different times during the event.

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