A few questions about the first year of science Chinese and English

2.Why is the direction of the Karukage north and south?

A: Because the point of direct sunlight moves back and forth between the Tropic of Cancer and the Tropic of Capricorn.

3.There are 5 people, A in the northern temperate zone, B in the southern cold zone, C on the equator, d in the northern hemisphere, e in the southern hemisphere, which figure has been facing south?

Answer: B's shadow is always facing south, because the southern cold zone is located south of the Tropic of Capricorn, and the sunlight in the southern cold zone is always coming from the north, so the shadow is naturally in the south.

5.Assuming that the Earth's rotation is perpendicular to the Earth's axis and the plane of rotation, will the direct sunlight point move north-south? If so, where?

Will there be a change in the length of day and night? If so, how? Will there be a polar day?

A change in the polar night? If so, how?

A: If it is perpendicular, there is no subsequent series of phenomena, and the sun is always directly at the equator. The rotation of the earth has no effect on the production of the seasons.

6.The twenty-four solar terms belong to the calendar. (One says it's the Gregorian calendar, and the other is a lunisolar calendar, which one is it?) )

Answer: The solar calendar, because the date of the solar term is relatively fixed in the solar calendar.

7.How many hours are the days in the Arctic Circle during the summer solstice in the Northern Hemisphere? How many hours are the days in the Antarctic Circle?

Answer: During the summer solstice in the Northern Hemisphere, the sun shines directly on the Tropic of Capricorn, which is also the northernmost break of the earth, and the polar day phenomenon occurs in the Arctic Circle, which is 24 hours during the day, and the polar night phenomenon occurs in the Antarctic Circle, and there is no day for 24 hours at night.

8.The date of the 24 solar terms, such as the summer solstice, June 21 or 22.

Answer: It is very easy to memorize with "Song of the Twenty-four Solar Terms".

The spring rain shocks the spring and the valley sky, the summer is full of mangs and the summer and summer are connected, the autumn dew and autumn frost fall, the winter snow and snow and the winter are small and cold.

There will be no change between the two festivals in January, and the difference will be one or two days at most.

The first half of the year was. Sixth, twenty-one, the second half of the year.

Eight, twenty-three. ”

That is to say, the 24 solar terms are generally in the solar calendar, two per month. The first half of the year is on the 6th and 21st of each month, and the second half of the year is on the 8th and 22nd of each month. A difference of a day or two at most. Look at any wall calendar is.

2: The earth rotates around the earth's axis, revolves around the sun, and the earth's axis is in a plane perpendicular to the orbital plane of the revolution, so the shadow faces south or north.

The shadow of 3:b is always facing south (except for b at the South Pole. Because at the South Pole, any direction facing b is facing north).

4: The lunar calendar is a calendar formulated according to the cycle of the moon's full and short cycles, with 30 days for the big month and 29 days for the small month.

5. The earth's revolution is perpendicular to the earth's axis and the plane of rotation, the direct point of sunlight will not move to the north and south, the sun has been directly hitting the equator, there will be no change in the length of day and night, and the day and night are equally divided around the world.

6.The 24 solar terms belong to the solar calendar. The 24 solar terms are the original creation of the ancestors of the Yellow River Basin in China, and have important guidance for China's agricultural production.

7.During the summer solstice in the Northern Hemisphere, the day length of the Arctic Circle is 24 hours; The day length of the Antarctic Circle is 0 hours.

1."The Great Tragedy"."Mirage"What does it mean?

Prepare for high school and college. Junior high school is the foundation of high school, and high school is more competitive.

Learning should be arranged with a simple and feasible plan to improve the learning method. At the same time, it is also necessary to participate in school activities appropriately and develop in an all-round way.

In the process of learning, we must: listen more (listen to lectures), remember more (remember important sample essays, remember important question structures, remember concepts, remember formulas), read more (read books), do more (do homework), ask more questions (ask if you don't understand), do more hands (do experiments), review more, and summarize more. Use the method of taking class notes to focus on the lesson.

Read more important texts in English, and be familiar with vocabulary and usage.

In other times, we must ensure the study time, ensure the learning quality of each subject, and not deviate from the subject.

Get enough sleep (8 hours) every day to ensure your learning efficiency.

Arrange appropriate free time for socializing with family and friends and other activities.

Through unremitting efforts, the results are improved and stabilized step by step. Do your best for the exam, be careful during the exam, and be calm when you sprint at the end. After the exam, you should summarize carefully so that you can study better in the future.

Right now: let go of the baggage, usually: study hard. Before the exam: prepare carefully, during the exam: don't give up, after the exam: normal heart. Remember!