Can you see with the naked eye that the moon is a sphere?

This is this year's Jiangxi Physics Middle School exam question, right?

Direct observation does not conclude that the moon is a sphere

But it can be concluded that the moon is at an angle of 45° to the east.

Because man can only see one side of the moon when he observes.

If the person does not know that the moon is a sphere.

Only one side of it can be seen.

And a 45° angle is possible.

Because the Moon rotates 360°.

If memory serves, the title should look like this:

On a certain day of a certain month, the physics teacher asked the students to observe the activities of the moon outside of class, and Xin Xin made the following records through direct observation

a. The moon is a sphere.

b. The moon is like a silver plate.

c. The moon is like a crooked boat.

d. The moon hangs in the sky at 45° east.

The standard answer to this question is: a

Direct observation does not conclude that the moon is a sphere

The Moon has one and only one side of the Earth forever, and it is not possible to see that the Moon is a sphere with the naked eye, nor can a telescope. It is estimated that this is the test center.

If it's 45 degrees, you should be able to visually inspect it. The moon is a sphere and needs to be observed for a whole month.

There is a difference between direct observation below the question and direct observation therein, and the question specifically says that the following are all observations, why don't you ask if you don't use the following? That's the beauty of words.

On the question of observing the moon, I will summarize the analysis process: students' extracurricular observation activities can be divided into direct (naked eye) observation and indirect observation. The four options for recording are all observational, b and c are direct observation records, and d has data indicating indirect observation with instruments, all of which are possible.

Only option A is not possible to observe directly or indirectly (the instrument also sees up to half a sphere). Is it easy for everyone to understand this analysis? Choose A

The moon itself is a sphere, but the direct ** is a plane, which is the teacher fooling us.

It's very tangled, I chose D

Observing the Moon in the East with the naked eye45 seems impossible and guess at best.

If the guess is correct, A can also be counted as guessing that it is a sphere.

I chose D, because you see the moon round from different angles, so A is wrong. And in a solar eclipse, you can see that the moon is a sphere.

Those who can't judge whether it is a sphere are basically highly myopic eyes!

I chose d, because the moon comes out of the west, when it is 45 degrees in the east, then the other angle between the line between the moon and the earth and the horizontal line is 135 degrees, we can only see the moon in 12 hours at night, then 12 180 = x 135, the solution is x = 9, it is about 7 or 8 o'clock in the morning, it is impossible to see the moon, so we should choose d...It is not that the moon will be visible within 12 hours, but it is said that the moon appears in our visual range for 12 hours, and there is a period of time when the sun and the moon appear at the same time, and only the sun can be seen at this time.

It's the D he chosen, and it's the standard answer.

It's miserable, it's miserable, everyone chooses d

Woo Woo blame me for thinking too much, I chose D at first, and then changed to A.

Hey, now it's just time to prepare for the next exam.

I'll tell you. When you look at the earth from outer space, you look like it's round. But it cannot be proved that the Earth is a sphere. The Earth is elliptical.

The earth and the moon are rotating, look at the night, it has been round, that means it is a sphere, not to mention that the title says 45 degrees, not to increase the contract, that is to say, can observation be determined, so I think choose D

I am also a Jiangxi candidate, it should not be possible to observe that the moon is a sphere, the moon is a sphere is an accurate conclusion reached by modern laser ranging, 45 degrees is just an approximate value, it can be drawn.

It can be seen that it is a sphere, which can be proved if it is a garden in two different positions.

I already knew that the moon was a three-dimensional figure.

It just depends on whether it's a cube or a sphere or something, and that's what I thought, anyway.

I chose 45 degrees.

Well, I chose ayes.

Because light travels in a straight line. So we can only see one surface. Do you have the ability to look at it with the naked eye and see if it's a ball? It's just a baked cake, whether it's good to hang it in the sky.

Are you looking at the universe???

Spheres are three-dimensional objects that you can see?

I chose Dyes, LS said D is the standard answer, is there a basis?

This is because the moon reflects and absorbs the sun's light, so we can see the moon with light.

Mainly because the moon reflects the sun's rays, so the moon we see is light.

When the sun shines, the matter is reflective. Writer Yang Daxia Yang Ke expressed.

Looking at the Moon from Earth, one can see up to a few percent of the Moon's Phenotype (Hui Talk) Correct Answer: a

When viewed from Earth, one can see up to 59% of the moon's surface.

The Moon has a balance motion of 5°9 minutes. That is, it is still possible to see it on Earth at a distance of 5°9 minutes on the side of the Moon.

Balance movement is also known as balance movement and stove. In astronomy, it refers to the periodic oscillations that are very slow, both real and visually, as seen from celestial bodies orbiting satellites. Although the balance motion can also be applied to other moons, planets, and even the Sun, astronomers have long used only the apparent motion of the Moon relative to the Earth, and to choose a point to balance and contrast the scale of the shaking.

Mainly due to the eccentricity of the lunar orbit, it is also formed by the intersection of the axis of rotation of the moon and the normal of the orbital plane rotating around the earth at an angle of 6 7 degrees.

Right. However, to be precise, it is not the "luminous part of the moon", but the "part of the moon illuminated by the sun". Because the moon does not glow.

The moon phase, short for "moon phase", is the astronomical name for the part of the moon seen on Earth illuminated by the sun.

As the moon moves a long distance from east to west in the starry sky every day, its shape is constantly changing, which is called the moon phase.

The principle of the formation of the phases of the moon.

U shield is good, good, good, a lot of red envelopes.

c, diffuse reflection. If it is specular, only a part of the Moon will be visible, but in fact the entire night hemisphere will be able to see the Moon.

The reason why people can feel the three-dimensional effect of objects (such as spheres) is because there is a distance between the left and right eyes, and the left and right eye vision deviation angles make the images seen not exactly the same, and the three-dimensional effect is felt after the brain synthesizes, based on this principle, because the moon is too far away from people, the visual bias angle of the left and right eyes tends to be 0 degrees, so that the image seen by the left and right eyes is basically the same, so you will not feel that it is a sphere. For example, if you watch a 3D movie, if you block one lens, the three-dimensional effect disappears.

Of course, the three-dimensional effect can also be shaped by light and shadow, but the moon is taken care of by the sun in a straight line, and reflected to the earth from a long distance, so that the highlight part has no excessive area in the dark part, so that there is no sphere effect on the plane!

I don't know if my answer is satisfactory to you, thank you!

The sphere is three-dimensional, just like if you look at a watermelon, you look at the watermelon in front of you, you only see one face, and you can't see the back.