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What is the phase of a planet when only half of its disc is visible?
Wiki User
∙ 15y ago
Your question is not clear, but if your talking about the phases of the Moon, then the answer would be a 1st and 3rd quarter.
Wiki User
∙ 15y ago
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What is the name of a phase of the moon when only half of its disc is visible?
1/2 moon
What is the term for the lit shape of the moon?
The general term for the visible lit part of the moon is "the phase of the moon." The visible lit portion can have a crescent shape, a gibbous shape or a "half-moon" (half circle) shape.
What is a gibbons moon?
It's called a gibbous moon, and it is a moon phase where more than half of the visible surface of the moon can be seen.
What does the term phase mean in respect to the moon?
How much of it is visible from earth, ie half moon, full moon etc. These are the phases
Is there any visible half dividing line is present on moon?
There is no 'visible half dividing line' present on any planet or moon. Much like State lines, which are imaginary lines to describe territories, but cannot actually be seen.
What fraction of the moon can be seen from the moon when the moon is at its third quarter phase?
Half of it, the same as always. Half of the visible side of the Moon will be brightly lit by the Sun, and the other half is often dimly visible by reflected earthshine, sunlight that is reflected from the Earth and then shines down on the night side of the Moon.
Why is the phase in which half moon is visible called a quarter moon?
Half of the Moon you cannot see because it faces away from Earth. Half of the side you could see is in darkness at "half Moon". That makes 3/4 of the Moon invisible and 1/4 visible. Hence "a quarter Moon" is visible. Another viewpoint: No, that's not really the answer. This is the answer: Let's start with "New Moon". Later, at "Full Moon", the Moon is halfway through its cycle of phases. Halfway between these two phases we see a half Moon. That's called the "first quarter" phase, because the Moon is a quarter of the way through its phases. So, that's why we see the half Moon at a "quarter" phase. It does cause confusion.
How many days does one lunar phase last?
New Moon = the moment when none of the moon's illuminated half is visible from the earth.Waxing Crescent = about 7 days; visible portion growing from zero to half of the moon's diskFirst quarter = the moment when half of the moon's disk is visibleWaxing gibbous = about 7 days; visible portion growing from half to all of the moon's diskFull Moon = the moment when all of the moon;s illuminated half is visible from the earth.Waning gibbous = about 7 days; visible portion shrinking from all to half of the moon's diskLast quarter = the moment when half of the moon's disk is visibleWaning Crescent = about 7 days; visible portion shrinking from half of the moon's disk to zero
When does the gibbous phase of the moon occur?
The gibbous phases of the Moon occur when the visible face of the Moon is more than half illuminated, but not fully illuminated.
Why is the phase in which half the moon is visible called a quarter moon?
Half of the Moon you cannot see because it faces away from Earth. Half of the side you could see is in darkness at "half Moon". That makes 3/4 of the Moon invisible and 1/4 visible. Hence "a quarter Moon" is visible. Another viewpoint: No, that's not really the answer. This is the answer: Let's start with "New Moon". Later, at "Full Moon", the Moon is halfway through its cycle of phases. Halfway between these two phases we see a half Moon. That's called the "first quarter" phase, because the Moon is a quarter of the way through its phases. So, that's why we see the half Moon at a "quarter" phase. It does cause confusion.
What is one half of a planet called?
Why would there be only half a planet?
What is the minimum percent of the moon that needs to be illuminated in order for the phase to be called gibbous?
A "gibbous" Moon has between 51% and 99% of the illuminated side of the Moon visible from Earth. Just to be precise; the Moon is always 50% illuminated. The Moon is a rocky ball, half in sunlight and half in darkness. As the Moon orbits the Earth, the same face of the Moon is always visible. From the Earth, we see "phases" of the Moon as the Moon orbits the Earth. At the new moon phase, the illuminated half of the Moon is the "far side" of the Moon; at the full, the illuminated half is the "near side".
