During a lunar eclipse, what is the penumbra? (1 point)
• It is the part of Earth's shadow where the sun is completely blocked.
• It is the part of Earth's shadow where the sun is only partially blocked.
• It is the part of the moon's shadow where the sun is only partially blocked.
• It is the part of the moon's shadow where the sun is completely blocked.
• It is the part of Earth's shadow where the sun is only partially blocked.
To determine the correct answer, let's break down the question and analyze the options.
The question is asking about the penumbra during a lunar eclipse. In a lunar eclipse, the Earth comes between the Sun and the Moon, casting a shadow on the Moon. The shadow consists of two parts: the umbra and the penumbra.
The umbra is the darker, central part of the shadow where the sunlight is completely blocked. It is responsible for the total eclipse phase, where the Moon appears dark.
The penumbra, on the other hand, is the outer part of the shadow, where the sunlight is only partially blocked. It is responsible for the partial eclipse phase, where the Moon appears dim and some light reaches it.
Now, let's consider the options:
• It is the part of Earth's shadow where the sun is completely blocked.
This option is incorrect because the penumbra is not the part of Earth's shadow where the sun is completely blocked. That would be the umbra.
• It is the part of Earth's shadow where the sun is only partially blocked.
This option is incorrect because the penumbra is not part of Earth's shadow. It is actually part of the Moon's shadow.
• It is the part of the moon's shadow where the sun is only partially blocked.
This option is correct. The penumbra is the part of the Moon's shadow where the sun is only partially blocked during a lunar eclipse.
• It is the part of the moon's shadow where the sun is completely blocked.
This option is incorrect because the penumbra is not the part of the Moon's shadow where the sun is completely blocked. That is the umbra.
Therefore, the correct answer is: It is the part of the moon's shadow where the sun is only partially blocked.
When Earth, the moon, and the sun align, which order would lead to a solar eclipse? (1 point)
• sun-Earth-moon
• moon-sun-Earth
• sun-moon-Earth
• moon-Earth-sun
• sun-moon-Earth
The correct answer is: It is the part of the Earth's shadow where the sun is only partially blocked.
When do total lunar eclipses occur? (1 point)
• infrequently during the new moon
• every month during the new moon
• infrequently during the full moon
• every month during the full moon
• infrequently during the full moon
What does it mean to be in the path of totality? (1 point)
• You are on part of Earth that is in the umbra of the moon's shadow.
• You are on part of Earth that is in the penumbra of the moon's shadow.
• You are on part of Earth that can see a partial lunar eclipse.
• You are on part of Earth that can see a total lunar eclipse.