I was a junior student, and I didn t understand the scientific movement of the earth around the sun

To give a map, since the Earth is tilted, in the summer the sun shines directly in the Northern Hemisphere, while in the winter the sun shines directly in the Southern Hemisphere, and in spring or autumn the sunlight hits the equator.

There is a picture in book p117, you can see for yourself

The orbital plane is a horizontal plane, which can also be called the ecliptic plane, and the angle between the ecliptic plane and the equator is called the yellow-red intersection angle.

The direction of revolution is from east to west, the period is heaven, and the Earth's axis is always pointing near the North Star.

On the summer solstice, the days are the longest and the nights are the shortest, and the polar day occurs in and north of the Arctic Circle. Polar nights occur in and south of the Antarctic Circle. The winter solstice is the opposite.

The changes caused by the revolution are: the production of the four seasons, the change of the dry shadow of the year, the change of the height of the sun at noon, the change of the length of day and night, etc.

There are some topics and explanations on this website, as well as some diagrams such as summer solstice, winter solstice, etc., which are recommended for you to check out.

Also, if you really don't understand, it is recommended that you ask the teacher, so that it may be easier to understand.

To put it simply, the Earth orbits the Sun, and it's an ellipse.

In other words, it's not the same distance as the Earth orbits the Sun.

When the Earth is far away from the Sun, heat travels farther, so it's winter, and the farther away it is, the colder it gets.

The closer you get, the hotter it gets.

When there is a comparison of pictures, you can judge by the distance that it is spring, summer, autumn and winter.

At the spring and autumn equinoxes, the direct point of the sun is at the equator; It is at the Tropic of Cancer at the summer solstice and at the Tropic of Cancer at the winter solstice.

We have slides for our school lectures, do you want them?

0 Tropic of Capricorn.

2.The height of the sun is high at noon in summer because the shadows are shorter in the summer, while the shadows become longer when the sun is low in the winter.

The days are longer and the nights are shorter in summer, and the nights are longer and the days are shorter in winter.

5.Day length, night short, equal length, night length, day and night equal length, equal length, equal length, equal length of day and night.

The length of the night, the length of the day, the length of the day, the length of the night, the shortness of the night.

b-1 c-2 d-3 e-3

Tropic of Cancer. Arctic Antarctica.

Long and short. Equatorial question 9 you do it yourself, each place is different.

Do it yourself, move around the sun (it's very simple, didn't you listen to the class?)

（1）……b）

2）……a）

3) Large, small, gradually decreasing from low latitude to high latitude.

4）a-3，b-1，c-4，d-2

5) The first question: n-boreal zone-north temperate zone-tropical-southern temperate zone-southern boreal zone-s. The second sub-question:

They are: Tropic of Cancer and Tropic of Capricorn. The third question ......The dividing line is the northern latitude; ......The dividing line is the southern latitude.

Question 4: First line: Tropical north latitude South latitude, yes, no, hot second row:

North temperate zone, south temperate zone: north latitude south latitude, none, none, warm. Third line:

Northern Arctic Zone, Southern Arctic Zone: North latitude and South latitude, none, yes, cold.

6）……b)

7）……d）

8）……d）

Believe me! That's right! I did it all!

Four words for you.

Pull oneself up by one’s bootstraps. * Hee-hee-hee ......

I don't know the original question. The Earth rotates on one side, the sun revolves, and it also revolves around the core of the Milky Way.

It's not very clear. The earth rotates while the sun revolves.

I sent the question over, but I didn't bring a notebook.

Hey? Is there a science subject in the first year of junior high school?

Enlarge. Now the angle between the Earth's axis and the Earth's orbit is degrees, the angle between the Earth's orbit and the equator is degrees, and the temperate range on Earth is multiplied by 2, which is equal to 47 degrees. If the angle between the axis of the earth and the earth's orbit is 60 degrees, then the angle between the earth's orbit and the imitation Zheng equator is 90-60=30 degrees, and the temperate range on the earth is 30 times 2, which is equal to 60 degrees.

It was bigger than the original and expanded.

North and South latitudes.

Winter solstice December 22 Straight 23 degrees 26 minutes south latitude This dimension is the Tropic of Capricorn Antarctica enters the polar day, the Arctic Circle enters the polar night, and everywhere in the Southern Hemisphere the days are the longest, the nights are the shortest, and the opposite is true in the Northern Hemisphere.

On the contrary, on June 22, the summer solstice, it will shine directly at 23 degrees 26 minutes north latitude This is the Tropic of Cancer The Arctic Circle enters the polar ridge sedan Antarctica enters the polar night The northern cherry blossom is everywhere in the hemisphere The day is the longest and the night is the shortest The Southern Hemisphere is the opposite.

The spring and autumn equinoxes are directly on the equator, and the day and night are equal in length all over the world.

The winter solstice shines directly at 23 degrees south latitude and does 26 minutes.

The summer solstice shines directly at 23 degrees 26 minutes north latitude.

Both the spring and autumn equinoxes hit the equator.

Winter solstice: The direct point of the sun is at the Tropic of Capricorn.

Summer solstice: The direct point of the sun is at the Tropic of Capricorn.

Probability? As long as the sun and the larger planets in the solar system are generated, the planets in the orbits of the major planets are almost 100% orbiting the sun, because they either move this way, or they are attracted to the sun because they are too close to the sun, or they are too far away from the sun and escape outside the solar system.

The son is a pilot, and the father's words are true. Because the earth revolves around the sun.

The son is an astronaut.

Father's words are true, my father is 60 years old, and he is still ready to live for a few more decades, so he will turn around dozens of times.

The son is an astronaut, and the father's words are right.