Question

1. the image below shows the moon and the earth. at what time would moonrise happen?

around 9:00 am
around 3:00 pm
around 9:00 pm
around 3:00 am

1. the moon rises at noon and sets at midnight. what is the phase of the moon?

new
first quarter
full
third quarter

Explanation:

For the first question (Moonrise time):

Step1: Analyze Earth-Moon-Sun positions

From the image, the Moon is positioned such that the sunlit side is facing a direction that, considering Earth's rotation, moonrise timing relates to the angle. When the Moon is in a position where the illuminated part and Earth's rotation (towards the Moon) would make moonrise around 9:00 PM. The Sun is at the bottom, so the Moon's position relative to Earth (the blue planet) and Sun: the side of Earth facing the Moon's illuminated part would have moonrise in the evening. Among the options, around 9:00 PM is correct as moonrise in evening (PM) and the angle suggests that time.

Step2: Eliminate other options

• Around 9:00 AM: Morning, but Moon's position (illuminated side) doesn't align with morning rise here.
• Around 3:00 AM: Early morning, incorrect.
• Around 3:00 PM: Afternoon, but the Sun's position (bottom) and Moon's position relative to Earth's day - night (the Earth has a light - dark line) shows the side of Earth facing the Moon is transitioning to night, so evening (PM) around 9 is better.

Step1: Recall Moon phase timings

The Moon rises at noon and sets at midnight. Let's recall the phases:

• New Moon: Rises at sunrise, sets at sunset.
• First Quarter: Rises at 9 AM, sets at 9 PM? No, wait: First Quarter Moon rises at noon? Wait, no: Wait, the Moon's phase and rise - set times: The First Quarter Moon: the Moon is at a right angle to the Earth - Sun line. So, the First Quarter Moon rises at noon and sets at midnight. Let's check other phases:
• Full Moon: Rises at sunset, sets at sunrise.
• Third Quarter: Rises at midnight, sets at noon.
• New Moon: Rises at sunrise, sets at sunset.

So when the Moon rises at noon and sets at midnight, it's the First Quarter? Wait, no: Wait, the First Quarter Moon: the illuminated half is visible, and the rise time: as the Earth rotates, the First Quarter Moon (half - lit, right side lit) rises at noon, sets at midnight. Let's confirm: The Moon's orbit and Earth's rotation: for First Quarter, the Moon is 90 degrees ahead of the Sun in the sky (from Earth's perspective). So when the Sun is at noon (meridian), the Moon is also at the meridian (rises at noon), and as Earth rotates 180 degrees (12 hours) to midnight, the Moon sets. So the phase is First Quarter? Wait, no, wait: Wait, the question says "The Moon rises at noon and sets at midnight. What is the phase of the Moon?" The options are New, First Quarter, Full, Third Quarter.
Wait, correction: The First Quarter Moon: rises at noon, sets at midnight. The Full Moon rises at sunset, sets at sunrise. The New Moon rises at sunrise, sets at sunset. The Third Quarter Moon rises at midnight, sets at noon. So yes, when rises at noon and sets at midnight, it's First Quarter? Wait, no, wait: Wait, the First Quarter Moon: the Moon is half - lit, and the time of rise: when the Moon is in the first quarter (90 degrees from Sun - Earth line), the rise time is noon, set at midnight. So the phase is First Quarter? Wait, but let's check again. Let's think about the Earth's rotation: at noon, the Sun is at the meridian. If the Moon rises at noon, that means the Moon is also at the meridian. For the First Quarter Moon, the angle between Sun - Earth - Moon is 90 degrees, so the Moon is at the meridian at noon, and as Earth rotates 12 hours (to midnight), the Moon sets. So the phase is First Quarter? Wait, no, maybe I mixed up. Wait, the correct phase when the Moon rises at noon and sets at midnight is the First Quarter? Wait, no, actually, the Moon that rises at noon and sets at midnight is the First Quarter? Wait, no, let's use the mnemonic: "First Quarter: noon rise, midnight set; Third Quarter: midnight rise, noon set; Full Moon: sunset rise, sunrise set; New Moon: sunrise rise, sunset set." Yes, so the First Quarter Moon rises at noon and sets at midnight.

Step2: Eliminate other options

• New: Rises at sunrise, sets at sunset. Eliminate.
• Full: Rises at sunset, sets at sunrise. Eliminate.
• Third Quarter: Rises at midnight, sets at noon. Eliminate.

Answer:

around 9:00 PM

For the second question (Moon phase when rises at noon, sets at midnight):