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1,a.The farthest celestial body ever observed by humans is about 15 billion kilometers away from the Earth; This is a false statement, we ourselves live in the universe.
c.Various celestial bodies exist in isolation in the universe: false, various celestial bodies have a mutual gravitational pull, as illustrated by the Earth's revolution and rotation.
d.The most basic celestial bodies in the universe are stars and planets, which should be stars and nebulae.
2.Earth-Moon and Solar System; Chang'e-2 is not only active in the Earth-Moon system.
The shape of the Moon is very malleable, so the phases of the Moon are constantly changing when seen on Earth: the Moon does not change, it only changes because it is blockedThe Moon itself does not emit light, and we see the bright Moon as a result of its reflection of the sun's light:
To CChang'e-2 has been a celestial object since it was loaded onto the rocket: a celestial body is a material body in space.
d.Chang'e-2 moved from the Earth's orbit to the Moon's orbit, and the hierarchy of the celestial system did not change: there was a change, the solar system to the Earth-Moon system.
4.There was originally a planet between Earth and Mars, and at some point a giant asteroid hit the planet and caused the planet to shatter, because Jupiter's gravity formed an asteroid belt before Jupiter and Mars.
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First of all, the first question A should measure the distance in the universe in light years, C must not exist in isolation (the solar system is an example), and d is the most basic is stars and nebulae.
In the second question, the moon revolves around the earth, which belongs to one kind, and the satellite revolves around the moon is another (it can be imagined that the earth is the sun, the moon is a planet orbiting the sun, Chang'e-2 is a satellite orbiting the planet, the planet and the sun form the earth-solar system, and the satellite and the star form the earth-moon system, just an analogy for easy understanding).
In the third question, the reason for the moon phase is that the earthlings see that the moon is partially changed by the sun, and c is called a celestial body when it is launched into space.
Question 4: I think you're wrong, Mars should be located between the Earth's orbit and Jupiter's orbit.
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The first question a should be a light year, not a kilometer, c is not isolated, d the basic objects are nebulae and stars.
The second question, if the earth's orbit is drawn is second-order, and Chang'e orbiting the moon also forms a first-order celestial system, therefore; The phase change of the moon can be seen on the earth, a is not true; Chang'e-2 is a celestial body when it is brought into space, not in the atmosphere or on the ground, so c is not right; Chang'e-2 orbiting the Earth is a system, and orbiting the Moon is a celestial system, so D is wrong;
Finally, instead of the Earth being located between the orbits of Mars and Jupiter, the asteroid belt is located between the orbits of Mars and Jupiter.
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I don't understand, it's too much.
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18-8=10
On the day of the autumnal equinox and the spring equinox, the global dawn is 6 o'clock, and the difference between Sydney and Beijing is about three hours.
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?: It's March at this time, and the perihelion is the beginning of January, so it seems that there is no choice, only when the sun hits the Tropic of Cancer, the dish is satisfied. aa
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1.The poor are more resource-based economic ( socio-economic.
Economy Science and Technology. 2.Qaidam Hoh Xil Solar Energy Geothermal Minerals 3Strengthen national unity, consolidate national defense, and promote social and economic development.
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Qaidam Hoh Xili.
Solar energy, geothermal energy, minerals.
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1. Northern Hemisphere, June 22.
00, 23:00, c, 12h.
3、a>c>b
4. 23 degrees 26 minutes north latitude, 0 degrees longitude, 3
5. 23 degrees 26 minutes north latitude, 45 degrees west longitude, decreasing from 23 degrees 26 minutes north latitude to the north and south sides.
6. In winter, day and night are equally divided.
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b a a,,, why there are fewer drawings.
The first question is to see that there is no Tropic of Cancer, only Europe.
The second question, there is no picture, I can only use the elimination method, the day length in Beijing is shorter than that in Guangzhou, which means that it should be in winter.
Season. c The water in the northern Indian Ocean flows in a clockwise direction, indicating that the Indian Ocean is a southwest monsoon, i.e.
Summertime. d The Tarim River is in the season of abundant water, and the Tarim River is an inland river, with little precipitation and runoff in the basin.
It mainly depends on the melting water of alpine ice and snow, so it should be summer. As for b the earth moves near aphelion, summer.
Season, there is no need to talk about it.
Third, it can be seen from the way that neither the north and south poles are polar day or polar night, but the global day and night are equinox, which should be.
At the equinox, b Arbor Day in our country is coming soon, Arbor Day, 12 March. It's over. c m point.
The length of the day and the short of the night, the m point is now the equinox of day and night. d At this time, the direct point of the sun passes from the northern hemisphere to the southern hemisphere.
Because it is not specific what day it is, it cannot be said in this way.
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10 questions, choose Europe, of which the southern part of Asia is obviously in the tropics, the American state of Hawaii in North America is in the tropics, and the three archipelagos of Oceania are in the tropics.
Question 1, this kind of question does not need to look at the picture, it is the second half of the Northern Hemisphere, and A is the opposite.
Question 2, A, Arbor Day has to be postponed.
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(1) The barometric pressure zone at b is an equatorial low pressure.
2) Westerly Wind Zone Temperate oceanic climate.
3) C is controlled by the northeast trade winds all year round d live deep inland, and the westerly wind cannot penetrate deep into the interior of the continent (4) e prevails northeast wind, f prevails southeast wind The climate of our country is cold and dry.
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(1) Equatorial low pressure.
2) Westerly Wind Zone Temperate oceanic climate.
3) c: Due to the influence of the Canarian cold current and the subtropical high pressure belt, the climate of the region is dry and rainy all year round. D: The place is deep in the interior of the continent, and it is difficult to reach the humid air from the ocean, which is low temperature and little rain all year round.
4) Southwesterly wind, northeast wind, mild and humid.
The general topography of Europe is characterized by plains, glacial landforms are widely distributed, high mountains and mountains converge in the south, plateaus, hills and mountains above 200 meters above sea level account for about 40% of the total area of the continent, of which only 15% are above 500,000 meters above sea level, and only about 2% are high mountains above 2,000 meters above sea level; Plains below 200 meters above sea level make up about 60% of the continent's area. The average altitude of the whole continent is 300 meters, which is the lowest average altitude of the continent. The European Plain stretches for thousands of miles from the Atlantic coast in the west to the Ural Mountains in the east, forming a great plain across Europe. >>>More
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1. c(a, Leo does not belong to the solar system; b, d, nebulae are not of the solar system; ) >>>More
Each question is summarized by a large question answer Generally the answers to the big questions have rules The earth should be memorized In fact, my geography grades are very good, and there is no special learning method, but if you want to learn well, you should reach the point where the textbook is memorized like a stream Say a knowledge point, you can reflect where it is in the book What is the layout of that page For example, there is a ** knowledge point in that position Written in that paragraph, you should know in your mind what knowledge points are on that page in addition to that knowledge point Just reach this level Anyway, that's how I do, it's best to communicate with the teacher, ask the teacher to help, and I wish you a good grade.
First of all, let me say that rice is mainly concentrated in the Asian monsoon region. It has the following characteristics: >>>More